Cita APA (7a ed.)

Lenneberg, E. H. (1968). New directions in the study of language (1st pbk. ed., 3rd pbk. printing.). MIT.

Cita Chicago Style (17a ed.)

Lenneberg, Eric H. New Directions in the Study of Language. 1st pbk. ed., 3rd pbk. printing. Cambridge (Massachusetts): MIT, 1968.

Cita MLA (9a ed.)

Lenneberg, Eric H. New Directions in the Study of Language. 1st pbk. ed., 3rd pbk. printing. MIT, 1968.