APA-viite (7. p.)

Babbie, E. R. (2021). The practice of social research (15th ed.). Cengage Learning Inc.

Chicago-viite (17. p.)

Babbie, Earl R. The Practice of Social Research. 15th ed. USA: Cengage Learning Inc, 2021.

MLA-viite (9. p.)

Babbie, Earl R. The Practice of Social Research. 15th ed. Cengage Learning Inc, 2021.