Healey, J. F., & O'Brien, E. (2015). Race, ethnicity, gender, and class: The sociology of group conflict and change (Seventh edition.). Sage.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHealey, Joseph F., और Eileen O'Brien. Race, Ethnicity, Gender, and Class: The Sociology of Group Conflict and Change. Seventh edition. Thousand Oaks, California: Sage, 2015.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHealey, Joseph F., और Eileen O'Brien. Race, Ethnicity, Gender, and Class: The Sociology of Group Conflict and Change. Seventh edition. Sage, 2015.
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