Cita APA (7th ed.)

Proctor, T. (2005). Essentials of marketing research (4th ed.). Financial Times/Prentice Hall.

Cita Chicago (17th ed.)

Proctor, Tony. Essentials of Marketing Research. 4th ed. Harlow, England ; New York: Financial Times/Prentice Hall, 2005.

Cita MLA (8th ed.)

Proctor, Tony. Essentials of Marketing Research. 4th ed. Financial Times/Prentice Hall, 2005.