APA-viite (7. p.)

Babbie, E. R. (1990). Survey research methods (2nd ed.). California.

Chicago-viite (17. p.)

Babbie, Earl R. Survey Research Methods. 2nd ed. Belmont: California, 1990.

MLA-viite (9. p.)

Babbie, Earl R. Survey Research Methods. 2nd ed. California, 1990.