Dyfyniad APA

Berenstain, S., Berenstain, J., & Berenstain, M. (2008). The Berenstain bears and the bad influence. HarperFestival.

Dyfyniad Arddull Chicago

Berenstain, Stan, Jan Berenstain, and Mike Berenstain. The Berenstain Bears and the Bad Influence. New York, NY: HarperFestival, 2008.

Dyfyniad MLA

Berenstain, Stan, et al. The Berenstain Bears and the Bad Influence. HarperFestival, 2008.

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