APA (7th ed.) Citation

Zipf, G. K. (1935). The psycho-biology of language: An introd. to dynamic philology. Mifflin.

Chicago Style (17th ed.) Citation

Zipf, George Kingsley. The Psycho-biology of Language: An Introd. to Dynamic Philology. Boston: Mifflin, 1935.

MLA (9th ed.) Citation

Zipf, George Kingsley. The Psycho-biology of Language: An Introd. to Dynamic Philology. Mifflin, 1935.

Warning: These citations may not always be 100% accurate.