APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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