Dyfyniad APA

Willems, M. (2011). Happy Pig Day! Hyperion Books for Children.

Dyfyniad Arddull Chicago

Willems, Mo. Happy Pig Day! New York: Hyperion Books for Children, 2011.

Dyfyniad MLA

Willems, Mo. Happy Pig Day! Hyperion Books for Children, 2011.

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