APA (7th ed.) Citation

Lewin, C., & Somekh, B. (2011). Theory and methods in social research (2nd ed.). SAGE.

Chicago Style (17th ed.) Citation

Lewin, Cathy, and Bridget Somekh. Theory and Methods in Social Research. 2nd ed. London: SAGE, 2011.

MLA (9th ed.) Citation

Lewin, Cathy, and Bridget Somekh. Theory and Methods in Social Research. 2nd ed. SAGE, 2011.