Gaya APA

COHEN, W, A. (2001). THE MARKETING PLAN, THIRD EDITION (ED. 3). NEW YORK: JOHN WILEY & SONS, INC.

Gaya MLA

COHEN, WILLIAM, A.. "THE MARKETING PLAN, THIRD EDITION". ED. 3 NEW YORK: JOHN WILEY & SONS, INC, 2001. Prodi S1 Manajemen.