Cita APA (7th ed.)

Tull, D. S., & Hawkins, D. I. (1980). Marketing research: Measurement and method : a text with cases (2d ed.). Macmillan.

Cita Chicago (17th ed.)

Tull, Donald S., i Del I. Hawkins. Marketing Research: Measurement and Method : A Text with Cases. 2d ed. New York: Macmillan, 1980.

Cita MLA (9th ed.)

Tull, Donald S., i Del I. Hawkins. Marketing Research: Measurement and Method : A Text with Cases. 2d ed. Macmillan, 1980.