APA (7th ed.) Citation

Pei, M. (1962). The families of words ([1st ed.].). Harper.

Chicago Style (17th ed.) Citation

Pei, Mario. The Families of Words. [1st ed.]. New York: Harper, 1962.

MLA (9th ed.) Citation

Pei, Mario. The Families of Words. [1st ed.]. Harper, 1962.