Gerson, R. F. (1991). Writing and implementing a marketing plan: A guide for small business owners. Crisp.
芝加哥风格引文Gerson, Richard F. Writing and Implementing a Marketing Plan: A Guide for Small Business Owners. Los Altos, Calif.: Crisp, 1991.
MLA引文Gerson, Richard F. Writing and Implementing a Marketing Plan: A Guide for Small Business Owners. Crisp, 1991.
警告：这些引文格式不一定是100％准确.