Citazione APA

Berger, R. M., & Patchner, M. A. (1988). Planning for research: A guide for the helping professions. Sage Publications.

Stile di citazione Chicago

Berger, Raymond M., e Michael A. Patchner. Planning for Research: A Guide for the Helping Professions. London: Sage Publications, 1988.

Citazione MLA

Berger, Raymond M., e Michael A. Patchner. Planning for Research: A Guide for the Helping Professions. Sage Publications, 1988.