Nelson, P. E. (1990). Confidence in public speaking (4th ed.). Wm.C.Brown.
Chicago (17e ed.) BronvermeldingNelson, Paul Edward. Confidence in Public Speaking. 4th ed. Iowa: Wm.C.Brown, 1990.
MLA (9e ed.) BronvermeldingNelson, Paul Edward. Confidence in Public Speaking. 4th ed. Wm.C.Brown, 1990.
Let op: Deze citaties zijn niet altijd 100% accuraat.