APA-čujuhus (7. p.)
Porter, L. W., & Steers, R. M. (1991). Motivation and work behavior (5th ed.). McGraw-Hill.
Chicago-čujuhus (17. p.)
Porter, Lyman W., juo Richard M. Steers. Motivation and Work Behavior. 5th ed. New York: McGraw-Hill, 1991.
MLA-čujuhus (9. p.)
Porter, Lyman W., juo Richard M. Steers. Motivation and Work Behavior. 5th ed. McGraw-Hill, 1991.
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