Cita APA

Whitney, L. F., & Hahnel, P. (1955). All about guppies. Practical Science Pub. Co..

Citación estilo Chicago

Whitney, Leon Fradley, and Paul Hahnel. All About Guppies. Orange, Conn.: Practical Science Pub. Co., 1955.

Cita MLA

Whitney, Leon Fradley, and Paul Hahnel. All About Guppies. Practical Science Pub. Co., 1955.