APA

Damroth W. G., Weterrings F. J., . (1987). Islands of the giant tortoise: the story of Galápagos. Sanibel, FL: Press Printing Co.

Chicago

Damroth William G, Weterrings Frans J, . 1987. Islands of the giant tortoise: the story of Galápagos. Sanibel, FL: Press Printing Co.

Harvard

Damroth W. G., Weterrings F. J., . (1987). Islands of the giant tortoise: the story of Galápagos. Sanibel, FL: Press Printing Co.

MLA

Damroth William G, Weterrings Frans J, . Islands of the giant tortoise: the story of Galápagos. Sanibel, FL: Press Printing Co. 1987.