Cita APA (7th ed.)

Christofferson, B. (2004). The man from Clear Lake: Earth Day founder Gaylord Nelson. University of Wisconsin Press.

Cita Chicago (17th ed.)

Christofferson, Bill. The Man from Clear Lake: Earth Day Founder Gaylord Nelson. Madison, Wis.: University of Wisconsin Press, 2004.

Cita MLA (9th ed.)

Christofferson, Bill. The Man from Clear Lake: Earth Day Founder Gaylord Nelson. University of Wisconsin Press, 2004.