APA način citiranja (7. izdanje)
Poulsen, E. (2009). Smiling bears: A zookeeper explores the behavior and emotional life of bears. Greystone Books.
Čikaški stil citiranja (17. izdanje)
Poulsen, Else. Smiling Bears: A Zookeeper Explores the Behavior and Emotional Life of Bears. Vancouver: Greystone Books, 2009.
MLA način citiranja (9. izdanje)
Poulsen, Else. Smiling Bears: A Zookeeper Explores the Behavior and Emotional Life of Bears. Greystone Books, 2009.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.