Put a source line within slides where you inserted images, videos, or quotes from an online source. Typically, the source line is at the bottom of the slide or images. Include a direct hyperlink to the source. If you'd like, you may also put the name of the organization in front of the hyperlink. For example, if you obtain the consumer price index data from the U.S. Bureau of Labor Statistics website for your presentation slides, you will put "Source: U.S. Bureau of Labor Statitsics http://www.bls.gov/cpi/" or simply "http://www.bls.gov/cpi/" within the slide.
Put a full bibliography or works cited at the end of the PowerPoint presentation. The format style is based on the discipline of the presentation. For example, if it is a social science presentation, you will need to use APA style. Ask your instructor or employer if there is a specific format they require. Place sources in a bulleted list. Unlike a research paper, do not use a hanging-indent format, and use single spacing.
Include a separate slide listing graphics and figures after the works cited slide(s). Again, use a bulleted list to cite the sources of each graphic you have borrowed from an online source. Follow the order of the slides as you present the list. The format is "Slide X, [title of the image/table], hyperlink."