Schoell, W. F., & Guiltinan, J. P. (1995). Marketing: Contemporary concepts and practices (6th ed.). Prentice Hall.
Cita Chicago (17th ed.)Schoell, William F., i Joseph P. Guiltinan. Marketing: Contemporary Concepts and Practices. 6th ed. Englewood Cliffs: Prentice Hall, 1995.
Cita MLA (9th ed.)Schoell, William F., i Joseph P. Guiltinan. Marketing: Contemporary Concepts and Practices. 6th ed. Prentice Hall, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.