Cita APA (7a ed.)

Webb, S. A., & Gray, M. (2009). Social work: Theories and methods. SAGE.

Cita Chicago Style (17a ed.)

Webb, Stephen A., y Mel Gray. Social Work: Theories and Methods. Los Angeles, London: SAGE, 2009.

Cita MLA (9a ed.)

Webb, Stephen A., y Mel Gray. Social Work: Theories and Methods. SAGE, 2009.