Dyfyniad APA

Heiman, S. E., Tuleja, T., & Sanchez, D. (2004). The new conceptual selling (2nd ed.). Warner Business Books, Kogan Page.

Dyfyniad Arddull Chicago

Heiman, Stephen E., Tad Tuleja, and Diane Sanchez. The New Conceptual Selling. 2nd ed. New York, NY : India: Warner Business Books, Kogan Page, 2004.

Dyfyniad MLA

Heiman, Stephen E., et al. The New Conceptual Selling. 2nd ed. Warner Business Books, Kogan Page, 2004.

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