Petulla, Sam. "Keeping track of political candidates online: Web archiver Perpetually follows the digital campaign trail." Nieman Journalism Lab. Nieman Foundation for Journalism at Harvard, 1 Dec. 2010. Web. 23 Nov. 2024.
APA
Petulla, S. (2010, Dec. 1). Keeping track of political candidates online: Web archiver Perpetually follows the digital campaign trail. Nieman Journalism Lab. Retrieved November 23, 2024, from https://www.niemanlab.org/2010/12/keeping-track-of-political-candidates-online-perpetually-archives-the-digital-campaign-trail/
Chicago
Petulla, Sam. "Keeping track of political candidates online: Web archiver Perpetually follows the digital campaign trail." Nieman Journalism Lab. Last modified December 1, 2010. Accessed November 23, 2024. https://www.niemanlab.org/2010/12/keeping-track-of-political-candidates-online-perpetually-archives-the-digital-campaign-trail/.
Wikipedia
{{cite web
| url = https://www.niemanlab.org/2010/12/keeping-track-of-political-candidates-online-perpetually-archives-the-digital-campaign-trail/
| title = Keeping track of political candidates online: Web archiver Perpetually follows the digital campaign trail
| last = Petulla
| first = Sam
| work = [[Nieman Journalism Lab]]
| date = 1 December 2010
| accessdate = 23 November 2024
| ref = {{harvid|Petulla|2010}}
}}
