APA (7th ed.) Zitazioa
Stern, G. J. (1990). Marketing workbook for nonprofit organizations. Amherst H. Wilder Foundation.
Chicago Style (17th ed.) Zitazioa
Stern, Gary J. Marketing Workbook for Nonprofit Organizations. St. Paul, Minn.: Amherst H. Wilder Foundation, 1990.
MLA (9th ed.) Zitazioa
Stern, Gary J. Marketing Workbook for Nonprofit Organizations. Amherst H. Wilder Foundation, 1990.
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