APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (8. p.)

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