Dyfyniad APA

Berenstain, S., & Berenstain, J. (1980). The Berenstain Bears and the missing dinosaur bone. Beginner Books.

Dyfyniad Arddull Chicago

Berenstain, Stan, and Jan Berenstain. The Berenstain Bears and the Missing Dinosaur Bone. New York: Beginner Books, 1980.

Dyfyniad MLA

Berenstain, Stan, and Jan Berenstain. The Berenstain Bears and the Missing Dinosaur Bone. Beginner Books, 1980.

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