APA

Bartholomew G. A., . (1952). Reproductive and social behavior of the northern elephant seal. Berkeley, Calif. [u.a.]: Univ. of California Press.

Chicago

Bartholomew George A, . 1952. Reproductive and social behavior of the northern elephant seal. Berkeley, Calif. [u.a.]: Univ. of California Press.

Harvard

Bartholomew G. A., . (1952). Reproductive and social behavior of the northern elephant seal. Berkeley, Calif. [u.a.]: Univ. of California Press.

MLA

Bartholomew George A, . Reproductive and social behavior of the northern elephant seal. Berkeley, Calif. [u.a.]: Univ. of California Press. 1952.