Cita APA (7a ed.)

Punch, K. (1998). Introduction to social research: Quantitative and qualitative approaches. SAGE.

Cita Chicago Style (17a ed.)

Punch, Keith. Introduction to Social Research: Quantitative and Qualitative Approaches. London [etc.]: SAGE, 1998.

Cita MLA (9a ed.)

Punch, Keith. Introduction to Social Research: Quantitative and Qualitative Approaches. SAGE, 1998.