Citazione APA

Punch, K. (2006). Developing effective research proposals (2nd ed.). SAGE.

Stile di citazione Chicago

Punch, Keith. Developing Effective Research Proposals. 2nd ed. London ; Thousand Oaks: SAGE, 2006.

Citazione MLA

Punch, Keith. Developing Effective Research Proposals. 2nd ed. SAGE, 2006.