APA-viite (7. p.)

Frey, J. H. (1989). Survey research by telephone (2nd ed.). Sage.

Chicago-viite (17. p.)

Frey, James H. Survey Research by Telephone. 2nd ed. Newbury Park, Calif: Sage, 1989.

MLA-viite (9. p.)

Frey, James H. Survey Research by Telephone. 2nd ed. Sage, 1989.