Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.