As of 2021, ASA/CSSA/SSSA follow the APA citation style.
Unless otherwise noted, images of citations on this page come from the ASA/CSA/SSSA style manual:
In-text citations are citations that occur within the body of your paper.
APA/ASA/CSSA/SSSA citation styles all use the author-year notation system. Below are some examples.
There has been at least 532 volcanic eruptions in recorded history (Ramos, 2015).
Ramos (2015) found 532 volcanic eruptions in recorded history.
There has been at least 532 volcanic eruptions in recorded history (Ramos & Wilson, 2015).
Ramos and Wilson (2015) found 532 volcanic eruptions in recorded history.
There has been at least 532 volcanic eruptions in recorded history (Ramos et al., 2015).
Ramos et al. (2015) found 532 volcanic eruptions in recorded history.
There has been at least 532 volcanic eruptions in recorded history (Ramos and Wilson, 2015; Martinez, 2019).
Ramos and Wilson (2015) and Martinez (2019) both found 532 volcanic eruptions in recorded history.
There has been at least 532 volcanic eruptions in recorded history (Ramos, 2015, p. 42).
Ramos (2015, p. 42) found 532 volcanic eruptions in recorded history.
Citing an Image from a University Collection or Museum
(Huckle, 1921)
Last Name, Initials. (Date created). Image title italicized [Media type]. Name of museum, City, State
Abbreviation, Country of museum. URL
Huckle, M.S. (1921). Horticulture students studying tree roots. Manuscripts, Archives, and Special Collections, Washington State
University, Pullman, WA, United
States. https://content.libraries.wsu.edu/digital/collection/p16866coll18/id/360).
Citing an Image from a Website - Author is Not Listed
([Presentation at Feeder's Day, Prosser, Washington], 1959)
Title of image [Media type]. (Date created). Title of website. URL
Presentation at Feeder's Day, Prosser, Washington [Photograph]. (1959). The Washington Rural Heritage Collection.
(https://www.washingtonruralheritage.org/digital/collection/prosser/id/646/rec/4).
ASA and SSSA do not have a uniform way to cite images within PowerPoint slides (neither does APA or MLA for that matter). Therefore, your goal should be keeping your presentations clean, clear, and consistent. If you are doing a presentation for a class it may be a good idea to ask your instructor how they prefer for you to cite images.
Typically you have a two options. I prefer option #1
1. Insert a References slide at the end of the presentation with a list of sources (and use a parenthetical reference on the individual slides). Some presentations also delineate both a References and an Images Used slide at the end of the presentation.
2. Create the citation directly on the slide where the image is by adding a text box which contains the properly formatted citation (typically using a smaller font).