Gaya APA

Cohen, W, A. (1990). The Entrepreneur and Small Business Problem Solver : An ENcyclopedic Reference and Guide (2nd ed.). New York: John Wiley & Sons.

Gaya MLA

Cohen, William, A.. "The Entrepreneur and Small Business Problem Solver : An ENcyclopedic Reference and Guide". 2nd ed. New York: John Wiley & Sons, 1990. Text.