Cita APA (7a ed.)

Sapsford, R. (2007). Survey research (2nd ed.). Sage Publications.

Cita Chicago Style (17a ed.)

Sapsford, Roger. Survey Research. 2nd ed. London ; Thousand Oaks, Calif.: Sage Publications, 2007.

Cita MLA (9a ed.)

Sapsford, Roger. Survey Research. 2nd ed. Sage Publications, 2007.