Payne, G., & Payne, J. (2004). Key concepts in social research. SAGE.
Citación estilo ChicagoPayne, Geoff, and Judy Payne. Key Concepts in Social Research. London: SAGE, 2004.
Cita MLAPayne, Geoff, and Judy Payne. Key Concepts in Social Research. SAGE, 2004.
Warning: These citations may not always be 100% accurate.