Cita APA (7a ed.)

Pilcher, D. M. (1990). Data analysis for the helping professions: A practical guide. Sage.

Cita Chicago Style (17a ed.)

Pilcher, Donald M. Data Analysis for the Helping Professions: A Practical Guide. Newbury Park [etc.]: Sage, 1990.

Cita MLA (9a ed.)

Pilcher, Donald M. Data Analysis for the Helping Professions: A Practical Guide. Sage, 1990.