APA način citiranja (7. izdanje)
Christofferson, B. (2004). The man from Clear Lake: Earth Day founder Gaylord Nelson. University of Wisconsin Press.
Čikaški stil citiranja (17. izdanje)
Christofferson, Bill. The Man from Clear Lake: Earth Day Founder Gaylord Nelson. Madison, Wis.: University of Wisconsin Press, 2004.
MLA način citiranja (9. izdanje)
Christofferson, Bill. The Man from Clear Lake: Earth Day Founder Gaylord Nelson. University of Wisconsin Press, 2004.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.