APA (7th ed.) Citation

Pei, M. (1969). Words in sheep's clothing ([1st ed.].). Hawthorn Books.

Chicago Style (17th ed.) Citation

Pei, Mario. Words in Sheep's Clothing. [1st ed.]. New York: Hawthorn Books, 1969.

MLA (9th ed.) Citation

Pei, Mario. Words in Sheep's Clothing. [1st ed.]. Hawthorn Books, 1969.