Dyfyniad APA

Wilson, K., & Segal, J. (2006). Sleepyhead. Margaret K. McElderry Books.

Dyfyniad Arddull Chicago

Wilson, Karma, and John Segal. Sleepyhead. New York: Margaret K. McElderry Books, 2006.

Dyfyniad MLA

Wilson, Karma, and John Segal. Sleepyhead. Margaret K. McElderry Books, 2006.

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