Cita APA (7th ed.)
ebrary, Inc, & Vries, M. d. (2010). Protecting marine mammals. Nova Science.
Cita Chicago (17th ed.)
ebrary, Inc, i Marielle de Vries. Protecting Marine Mammals. New York: Nova Science, 2010.
Cita MLA (9th ed.)
ebrary, Inc, i Marielle de Vries. Protecting Marine Mammals. Nova Science, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.