APA (7e ed.) Bronvermelding

Wagenaar, T. C., & Babbie, E. R. (1998). Practicing social research: Guided activities to accompany : the practice of social research (Eight edition.). Wadsworth Publishing Company.

Chicago (17e ed.) Bronvermelding

Wagenaar, Theodore C., en Earl R. Babbie. Practicing Social Research: Guided Activities to Accompany : The Practice of Social Research. Eight edition. Belmont, California: Wadsworth Publishing Company, 1998.

MLA (9e ed.) Bronvermelding

Wagenaar, Theodore C., en Earl R. Babbie. Practicing Social Research: Guided Activities to Accompany : The Practice of Social Research. Eight edition. Wadsworth Publishing Company, 1998.