Cita APA (7th ed.)

Greenberg, J. (1968). Universals of language. Institute of Technology.

Cita Chicago (17th ed.)

Greenberg, Joseph. Universals of Language. New York, Estados Unidos: Institute of Technology, 1968.

Cita MLA (9th ed.)

Greenberg, Joseph. Universals of Language. Institute of Technology, 1968.