Cita APA (7th ed.)
Rubin, A., & Babbie, E. (1997). Research methods for social work (3rd ed.). Brooks/Cole.
Cita Chicago (17th ed.)
Rubin, Allen, i Earl Babbie. Research Methods for Social Work. 3rd ed. Pacific Grove: Brooks/Cole, 1997.
Cita MLA (9th ed.)
Rubin, Allen, i Earl Babbie. Research Methods for Social Work. 3rd ed. Brooks/Cole, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.