Cita APA (7th ed.)

Tull, D. S. &. H. D. I. (1960). Marketing Research: Measurment & Method (6.). PHI.

Cita Chicago (17th ed.)

Tull, Donald S & Hawkins Del I. Marketing Research: Measurment & Method. 6. New delhi: PHI, 1960.

Cita MLA (9th ed.)

Tull, Donald S & Hawkins Del I. Marketing Research: Measurment & Method. 6. PHI, 1960.