Cita APA (7a ed.)

Payne, G., & Payne, J. (2004). Key concepts in social research. SAGE.

Cita Chicago Style (17a ed.)

Payne, Geoff, y Judy Payne. Key Concepts in Social Research. London: SAGE, 2004.

Cita MLA (8a ed.)

Payne, Geoff, y Judy Payne. Key Concepts in Social Research. SAGE, 2004.