Dyfyniad APA

Numeroff, L. J., & McPhail, D. (2006). When sheep sleep. Abrams Books for Young Readers.

Dyfyniad Arddull Chicago

Numeroff, Laura Joffe, and David McPhail. When Sheep Sleep. New York: Abrams Books for Young Readers, 2006.

Dyfyniad MLA

Numeroff, Laura Joffe, and David McPhail. When Sheep Sleep. Abrams Books for Young Readers, 2006.

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