Cita APA (7th ed.)

Tull. (1984). Marketing research (3rd.). Macmillan.

Cita Chicago (17th ed.)

Tull. Marketing Research. 3rd. New York: Macmillan, 1984.

Cita MLA (9th ed.)

Tull. Marketing Research. 3rd. Macmillan, 1984.