Cita APA (7a ed.)

Punch, K. (2005). Introduction to social research: Quantitative and qualitative approaches (2nd ed.). SAGE.

Cita Chicago Style (17a ed.)

Punch, Keith. Introduction to Social Research: Quantitative and Qualitative Approaches. 2nd ed. London ; Thousand Oaks, Calif.: SAGE, 2005.

Cita MLA (8a ed.)

Punch, Keith. Introduction to Social Research: Quantitative and Qualitative Approaches. 2nd ed. SAGE, 2005.