Murphy, R. F. 1957. Intergroup Hostility and Social Cohesion. American Anthropologist 59. 1018-1035.
@article{murphy1957,
author = {Murphy, R. F.},
journal = {American Anthropologist},
key = {Murphy (1957)},
pages = {1018-1035},
title = {Intergroup Hostility and Social Cohesion},
volume = {59},
year = {1957}
}