APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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