APA način citiranja

Kay, L., & Palen, S. (2006). 21st century astronomy. New York: Norton & Company.

Čikaški stil citiranja

Kay, Laura, i Stacy Palen. 21st Century Astronomy. New York: Norton & Company, 2006.

MLA način citiranja

Kay, Laura, i Stacy Palen. 21st Century Astronomy. New York: Norton & Company, 2006.