Cita APA (7a ed.)

Kingsley Zipf, G. (1968). The psycho-biology of language: An Introduction to Dynamic Philology. The MIT Press.

Cita Chicago Style (17a ed.)

Kingsley Zipf, George. The Psycho-biology of Language: An Introduction to Dynamic Philology. Cambridge: The MIT Press, 1968.

Cita MLA (9a ed.)

Kingsley Zipf, George. The Psycho-biology of Language: An Introduction to Dynamic Philology. The MIT Press, 1968.