Cita APA (7a ed.)

Barrett, H. (1981). Speaking practically. Holt Rinehart & Winstor.

Cita Chicago Style (17a ed.)

Barrett, Harold. Speaking Practically. New York: Holt Rinehart & Winstor, 1981.

Cita MLA (9a ed.)

Barrett, Harold. Speaking Practically. Holt Rinehart & Winstor, 1981.