APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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