Cita APA (7th ed.)

Diamond, J., & Pintel, G. (1991). Principles of marketing (4th ed.). Prentice Hall.

Cita Chicago (17th ed.)

Diamond, Jay, i Gerald Pintel. Principles of Marketing. 4th ed. Englewood Cliffs, N.J: Prentice Hall, 1991.

Cita MLA (9th ed.)

Diamond, Jay, i Gerald Pintel. Principles of Marketing. 4th ed. Prentice Hall, 1991.