Dyfyniad APA

O'Hare, . M. (2007). Why don't Penguin's feet freeze? and 114 other questions. Profile books.

Dyfyniad Arddull Chicago

O'Hare, Mick. Why Don't Penguin's Feet Freeze? and 114 Other Questions. London: Profile books, 2007.

Dyfyniad MLA

O'Hare, Mick. Why Don't Penguin's Feet Freeze? and 114 Other Questions. Profile books, 2007.

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