APA (7e ed.) Bronvermelding

Gerson, R. F. (1991). Writing and implementing a marketing plan: A guide for small business owners. Crisp.

Chicago (17e ed.) Bronvermelding

Gerson, Richard F. Writing and Implementing a Marketing Plan: A Guide for Small Business Owners. Los Altos, Calif.: Crisp, 1991.

MLA (9e ed.) Bronvermelding

Gerson, Richard F. Writing and Implementing a Marketing Plan: A Guide for Small Business Owners. Crisp, 1991.