Rust, Mary C. 1996. “Social Identity and Social Categorization”. Department of Psychology. University of Delaware. Referenced from www.proquest.com: Social identity and social categorization.

Dovidio, John F., Samuel L. Gaertner, and Alice M. Isen. 1995. “Group Representations and Intergroup Bias: Positive Affect, Similarity, and Group Size”. Personality & Social Psychology Bulletin 21: 856-65. doi:10.1177/0146167295218009.

Johnson, Craig, Mark Schaller, and Brian Mullen. 2000. “Social Categorization and Stereotyping: ’You Mean I’m One of ‘them’?’”. British Journal of Social Psychology 39: 1-25. doi:10.1348/014466600164291.

Commins, Barry, and John Lockwood. 1978. “The Effects of Intergroup Relations of Mixing Roman Catholics and Protestants: An Experimental Investigation”. European Journal of Social Psychology 8: 218-19. doi:10.1002/ejsp.2420080310.

Browna, Rupert, and John C. Turner. 1979. “The Criss-Cross Categorization Effect in Intergroup Discrimination”. British Journal of Social and Clinical Psychology 18: 371-83. doi:10.1111/j.2044-8260.1979.tb00907.x.

Vanbeselaere, Norbert. 1987. “The Effects of Dichotomous and Crossed Social Categorizations Upon Intergroup Discrimination”. European Journal of Social Psychology 17: 143-56. doi:10.1002/ejsp.2420170203.

Costa-Lopes, Rui, Cicero Roberto Pereira, and Charlesa M. Judd. 2014. “Categorisation Salience and Ingroup Bias: The Buffering Role of a Multicultural Ideology”. International Journal of Psychology 49. Wiley: 508–512. doi:10.1002/ijop.12044.

Banfield, Jillian C., and John F. Dovidio. 2013. “Whites Perceptions of Discrimination Against Blacks: The Influence of Common Identity”. Journal of Experimental Social Psychology 49. Elsevier BV: 833–841. doi:10.1016/j.jesp.2013.04.008.

Good, Arla, Becky L. Choma, and Frank A. Russo. 2017. “Movement Synchrony Influences Intergroup Relations in a Minimal Groups Paradigm”. Basic and Applied Social Psychology 39. Informa UK Limited: 231–238. doi:10.1080/01973533.2017.1337015.

Bilewicz, Michal. 2007. “History As an Obstacle: Impact of Temporal-Based Social Categorizations on Polish-Jewish Intergroup Contact”. Group Processes & Intergroup Relations 10. SAGE Publications: 551–563. doi:10.1177/1368430207081540.

Gómez, Ángel, John F. Dovidio, Samuel L. Gaertner, Saulo Fernández, and Alexandra Vázquez. 2013. “Responses to Endorsement of Commonality by Ingroup and Outgroup Members: The Roles of Group Representation and Threat”. Personality and Social Psychology Bulletin 39. Sage Publications Sage CA: Los Angeles, CA: 419–431. doi:10.1177/0146167213475366.