APA (7e ed.) Bronvermelding

Gray, G., & Guppy, N. (2003). Successful Surveys: Research Methods and Practice (3rd ed.). Thomson Nelson.

Chicago (17e ed.) Bronvermelding

Gray, George, en Neil Guppy. Successful Surveys: Research Methods and Practice. 3rd ed. Scarborough: Thomson Nelson, 2003.

MLA (9e ed.) Bronvermelding

Gray, George, en Neil Guppy. Successful Surveys: Research Methods and Practice. 3rd ed. Thomson Nelson, 2003.

Let op: Deze citaties zijn niet altijd 100% accuraat.