Dyfyniad APA

Berenstain, J., & Berenstain, M. (2007). Trim the tree. Harper Festival.

Dyfyniad Arddull Chicago

Berenstain, Jan, and Mike Berenstain. Trim the Tree. New York: Harper Festival, 2007.

Dyfyniad MLA

Berenstain, Jan, and Mike Berenstain. Trim the Tree. Harper Festival, 2007.

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