APA (7th ed.) Citation

Stevens, R. (2007). Why otters don't wear socks: Poems (1. publ.). Macmillan Children's Books.

Chicago Style (17th ed.) Citation

Stevens, Roger. Why Otters Don't Wear Socks: Poems. 1. publ. London: Macmillan Children's Books, 2007.

MLA (9th ed.) Citation

Stevens, Roger. Why Otters Don't Wear Socks: Poems. 1. publ. Macmillan Children's Books, 2007.