APA (7e ed.) Bronvermelding
Friesen, M. E. (1998). The internal sell: Encouraging executive influence and accomplishment. Quorum Books.
Chicago (17e ed.) Bronvermelding
Friesen, Michael E. The Internal Sell: Encouraging Executive Influence and Accomplishment. Westport, Conn.: Quorum Books, 1998.
MLA (9e ed.) Bronvermelding
Friesen, Michael E. The Internal Sell: Encouraging Executive Influence and Accomplishment. Quorum Books, 1998.
Let op: Deze citaties zijn niet altijd 100% accuraat.