Παραπομπή APA

Rafael J Engel & Russell K Schutt. (2013). The practice of research in social work. Sage.

Παραπομπή Chicago Style

Rafael J Engel και Russell K Schutt. The Practice of Research in Social Work. Los Angeles: Sage, 2013.

Παραπομπή MLA

Rafael J Engel και Russell K Schutt. The Practice of Research in Social Work. Sage, 2013.