APA

Beebe W., Cooper I. & Tee-Van J. (1927). Galápagos. London, U.K: G. P. Putnam's Sons.

Chicago

Beebe William, Cooper Isabel and Tee-Van John. 1927. Galápagos. London, U.K: G. P. Putnam's Sons.

Harvard

Beebe W., Cooper I. and Tee-Van J. (1927). Galápagos. London, U.K: G. P. Putnam's Sons.

MLA

Beebe William, Cooper Isabel and Tee-Van John. Galápagos. London, U.K: G. P. Putnam's Sons. 1927.