Kotler, P., Armstrong, G., & Brooks, J. R. (1999). Principles of marketing: Instructor's resource manual (8th ed.). Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Kotler, Philip, Gary Armstrong, agus John R. Brooks. Principles of Marketing: Instructor's Resource Manual. 8th ed. Upper Saddle River, N.J: Prentice-Hall, 1999.
Lua MLA (9ú heag.)Kotler, Philip, et al. Principles of Marketing: Instructor's Resource Manual. 8th ed. Prentice-Hall, 1999.
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