APA引文

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

Chicago Edition Citation

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

MLA引文

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

警告：这些引文格式不一定是100％准确.