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Buku Teks
John Wiley & Sons , 2009
Buku Teks
edited by Cary L. Cooper, James Campbell Quick, Marc J. Schabracq
John Wiley & Sons, 2009
Buku Teks
edited by Elizabeth K. Carll
Praeger, 2007
Buku Teks
edited by Henry Wechsler, Leonard Solomon, Bernard M. Kramer
Holt, Rinehart and Winston, 1970
Buku Teks