Παραπομπή APA

Harris, C. J. (1968). Otters: A study of the recent lutrinae.

Παραπομπή Chicago Style

Harris, C J. Otters: A Study of the Recent Lutrinae. Weidenfeld & Nicoloson, London, 1968.

Παραπομπή MLA

Harris, C J. Otters: A Study of the Recent Lutrinae. 1968.