“A theory and investigation of the effect of exchange-orientation on marriage and friendship”. "Journal of Marriage and the Family", 39, 543-548. "
 - Thibaut J. W, and Kelley H. H, 1959. "he social psychology of groups"; New York: Wiley. 

 Enlaces externos. 
 - Theories used in research
“A theory and investigation of the effect of exchange-orientation on marriage and friendship”. "Journal of Marriage and the Family", 39, 543-548. "
 - Thibaut, J. W., and Kelley, H. H., 1959. "The social psychology of groups"; New York: Wiley. 

 Enlaces externos. 
 - Theories used in research
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