Cita APA (7th ed.)

Graff, W. L. (1964). Language and languages: An introduction to linguistics. Russell and Russell.

Cita Chicago (17th ed.)

Graff, Willem Laurens. Language and Languages: An Introduction to Linguistics. New York: Russell and Russell, 1964.

Cita MLA (9th ed.)

Graff, Willem Laurens. Language and Languages: An Introduction to Linguistics. Russell and Russell, 1964.