APA

Hopkins A., Potter J., . (1997). Animals in Danger. New York: Oxford University Press.

Chicago

Hopkins A, Potter J, . 1997. Animals in Danger. New York: Oxford University Press.

Harvard

Hopkins A., Potter J., . (1997). Animals in Danger. New York: Oxford University Press.

MLA

Hopkins A, Potter J, . Animals in Danger. New York: Oxford University Press. 1997.