Παραπομπή APA

Zeitzschel, B. (1973). The biology of the Indian ocean. Springer-verlag.

Παραπομπή Chicago Style

Zeitzschel, Bernt. The Biology of the Indian Ocean. New York: Springer-verlag, 1973.

Παραπομπή MLA

Zeitzschel, Bernt. The Biology of the Indian Ocean. Springer-verlag, 1973.