Cita APA (7th ed.)

Sapsford, R., & Jupp, V. (2006). Data collection and analysis (2nd ed.). Sage.

Cita Chicago (17th ed.)

Sapsford, Roger, i Victor Jupp. Data Collection and Analysis. 2nd ed. London: Sage, 2006.

Cita MLA (9th ed.)

Sapsford, Roger, i Victor Jupp. Data Collection and Analysis. 2nd ed. Sage, 2006.