Cita APA (7th ed.)

Engel, R. J., & Schutt, R. K. (2017). The practice of research in social work. Sage.

Cita Chicago (17th ed.)

Engel, Rafael J., i Russell K. Schutt. The Practice of Research in Social Work. Thousand Oaks, Calif: Sage, 2017.

Cita MLA (9th ed.)

Engel, Rafael J., i Russell K. Schutt. The Practice of Research in Social Work. Sage, 2017.