Smither, R. D. (1994). The psychology of work and human performance (2nd ed.). HarperCollins College Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSmither, Robert D. The Psychology of Work and Human Performance. 2nd ed. New York: HarperCollins College Publishers, 1994.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSmither, Robert D. The Psychology of Work and Human Performance. 2nd ed. HarperCollins College Publishers, 1994.
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