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ACP 101

Researching Basics

General Information

On this page there are sites for finding Public Domain and Creative Commons photos. Although Public Domain Images require no attribution, it is best practice to include a link to the photo and to attribute the photographer and the website where you found the photo (e.g., Photo by Jeremy Bishop on Unsplash) . Creative Commons Images have seven different licenses. You must pay attention to the license acronyms and cite accordingly. Below is a chart, found on Wikipedia, that describes what can and cannot be done with images that have the various licenses.

MLA Citation Examples

Digital Image Found on a Photo Website:


Creators's last name, first name (if available). Title of Image or Description of image.
          Date of creation. Title of the Website where the image is located. Publisher or
          sponsor of the site (if available). Medium of publication ("Web"). Date of access
          (Day Month (abbreviated) Year).


Salgado, Jose. Up Close and Personal with the Very Large Telescope. 6 Dec. 2010.
          ESO Picture of the Week. European Southern Observatory. Web. 9 April. 2011.

Sayer, Larissa. Nurse Log. 27 Jan. 2007. Flickr. Yahoo! Web. 7 Apr. 2011

Digital Image Found in an Article on a Website:

Creator's Last name, First name (if available). "Title of the digital image." Title of the
First name Last name of and contributors, Version (if applicable), Number
          (if applicable), Publisher, Publication date, URL.

Vasquez, Gary A. Photograph of Coach K with Team USA. NBC Olympics, USA Today
          Sports, 5 Aug. 2016, Retrieved from

APA Citation Examples

Reference (Known Author)

  Artist Surname, First Initial. Second Initial. (Year). Title of the artwork [Format].

            Retrieved from URL (address of web site)


Reference (No Author, but you know where author was affiliated and year it was taken)

Westinghouse Electric Corporation. (2009). Lightning model [Photograph]. Retrieved


 Reference (No Author)

 Title of work [Type of work]. (Year image was created).
            Retrieved from URL (address of web site)

Reference (No Author, No Title, No Date) (Many images found on the Web fall under this category. Try to locate the missing information by clicking on the image, and/or looking at the bottom of the image.)

[Subject and type of work]. Retrieved from URL (address of web site)

For example:

[Untitled photograph of sleeping dog]. Retrieved from

Reference (Your personal photos)

Anderson, B. (Year picture was taken). Description of picture. [photograph]. (Own private collection).

Public Domain Images

These pictures require no attribution but it is best practice to give credit by including a link to the photo and credit the photographer and the site where the photo was found. (E.g., Photo by Jeremy Bishop on Unsplash)




Public Domain Vectors

Open Clipart



ISO Republic

Wikimedia Commons


British Library

Old Book Illustrations

Creative Commons Images

See the chart above to determine whether or not you are allowed to use the photo and what type of attribution is necessary.



Free Stock Photos



Flicker (You need to create an account)


More Free Photos

100+ AMAZING Free Stock Images & Photo Resources for 2018: Pay attention to the licensing for each photo. Some are public domain and others are Creative Commons. Remember that CC0 is the only type of licensing that has no restrictions on use and does not need to be cited. However, it is always good practice to give attribution.