Wray, R., Highland, P. J., & Luft, R. L. (1996). Fundamentals of human relations: Applications for life & work. South-Western Educational Pub.
Lua i Stíl Chicago (17ú heag.)Wray, Ralph, PAtrick J. Highland, agus Roger L. Luft. Fundamentals of Human Relations: Applications for Life & Work. Cincinn. Ohio: South-Western Educational Pub, 1996.
Lua MLA (9ú heag.)Wray, Ralph, et al. Fundamentals of Human Relations: Applications for Life & Work. South-Western Educational Pub, 1996.
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