APA (7th ed.) Citation

Campbell, W. K., & Sedikides, C. (2000). Among friends?: An examination of friendship and the self-serving bias. The British Psychological Society.

Chicago Style (17th ed.) Citation

Campbell, W. Keith, and Costantine Sedikides. Among Friends?: An Examination of Friendship and the Self-serving Bias. [Place of publication not identified]: The British Psychological Society, 2000.

MLA (9th ed.) Citation

Campbell, W. Keith, and Costantine Sedikides. Among Friends?: An Examination of Friendship and the Self-serving Bias. The British Psychological Society, 2000.