APA (7e ed.) Bronvermelding
Riddle, J. (2001). Entrepreneur magazine's consulting business. Entrepreneur Press.
Chicago (17e ed.) Bronvermelding
Riddle, John. Entrepreneur Magazine's Consulting Business. Irvine, CA: Entrepreneur Press, 2001.
MLA (9e ed.) Bronvermelding
Riddle, John. Entrepreneur Magazine's Consulting Business. Entrepreneur Press, 2001.
Let op: Deze citaties zijn niet altijd 100% accuraat.