APA

Ryan M. J., Wilczynski W., . (2011). An introduction to animal behavior. New york: Cold spring harbor laboratory press.

Chicago

Ryan Michael J, Wilczynski Walter, . 2011. An introduction to animal behavior. New york: Cold spring harbor laboratory press.

Harvard

Ryan M. J., Wilczynski W., . (2011). An introduction to animal behavior. New york: Cold spring harbor laboratory press.

MLA

Ryan Michael J, Wilczynski Walter, . An introduction to animal behavior. New york: Cold spring harbor laboratory press. 2011.