Assortment of encounters and evolution of cooperativeness.

MLA

Eshel, I., and L. L. Cavalli-Sforza. “Assortment of Encounters and Evolution of Cooperativeness.” Proceedings of the National Academy of Sciences of the United States of America, vol. 79, no. 4, Feb. 1982, pp. 1331–35. EBSCOhost, https://doi.org/10.1073/pnas.79.4.1331.

APA

Eshel, I., & Cavalli-Sforza, L. L. (1982). Assortment of encounters and evolution of cooperativeness. Proceedings of the National Academy of Sciences of the United States of America, 79(4), 1331–1335. https://doi.org/10.1073/pnas.79.4.1331

Chicago

Eshel, I, and L L Cavalli-Sforza. 1982. “Assortment of Encounters and Evolution of Cooperativeness.” Proceedings of the National Academy of Sciences of the United States of America 79 (4): 1331–35. doi:10.1073/pnas.79.4.1331.