Punch, K. F. (2000). Developing effective research proposals. Sage.
Cita Chicago (17th ed.)Punch, Keith F. Developing Effective Research Proposals. London: Sage, 2000.
Cita MLA (9th ed.)Punch, Keith F. Developing Effective Research Proposals. Sage, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.