Cita APA (7th ed.)

Sapsford, R., & Jupp, V. (2006). Data collection and analysis. SAGE Publications.

Cita Chicago (17th ed.)

Sapsford, Roger, i Victor Jupp. Data Collection and Analysis. London: SAGE Publications, 2006.

Cita MLA (9th ed.)

Sapsford, Roger, i Victor Jupp. Data Collection and Analysis. SAGE Publications, 2006.