APA-referens (7:e uppl.)

Babbie, E. (2004). The Practice of Social Research (10th.). Thomson Learning.

Chicago-referens (17:e uppl.)

Babbie, Earl. The Practice of Social Research. 10th. Singapore: Thomson Learning, 2004.

MLA-referens (9:e uppl.)

Babbie, Earl. The Practice of Social Research. 10th. Thomson Learning, 2004.