Punch, K. (2006). Developing effective research proposals (2nd ed.). SAGE Publications.
Cita Chicago (17th ed.)Punch, Keith. Developing Effective Research Proposals. 2nd ed. London: SAGE Publications, 2006.
Cita MLA (8th ed.)Punch, Keith. Developing Effective Research Proposals. 2nd ed. SAGE Publications, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.