APA-viite

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

Chicago-tyylinen lähdeviittaus

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

MLA-viite

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