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Lua i Stíl Chicago (17ú heag.)Ioannou, M., A. Al Ramiah, agus M. Hewstone. An Experimental Comparison of Direct and Indirect Intergroup Contact. Elsevier, 2017.
Lua MLA (9ú heag.)Ioannou, M., et al. An Experimental Comparison of Direct and Indirect Intergroup Contact. Elsevier, 2017.
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