APA (7e ed.) Bronvermelding
Hybels, S. (1989). Communicating effectively (3rd ed.). Random House.
Chicago (17e ed.) Bronvermelding
Hybels, Saundra. Communicating Effectively. 3rd ed. New York: Random House, 1989.
MLA (9e ed.) Bronvermelding
Hybels, Saundra. Communicating Effectively. 3rd ed. Random House, 1989.
Let op: Deze citaties zijn niet altijd 100% accuraat.