Gaya APA

Steers, R, M., Porter, L, W. (1991). Motivation and work behavior (5th.ed.). New York: Mc.Graw-Hill, Inc..

Gaya MLA

Steers, Richard, M.., Porter, Lyman, W.. "Motivation and work behavior". 5th.ed. New York: Mc.Graw-Hill, Inc., 1991. Text.