White, Thomas Y
Prentice-Hall, 1988
Buku Teks SO
White, Thomas I.
NJ John Wiley & Sons,, 2017
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Cahn, Edmond
Indiana University Press, 1981
Buku Teks
Robbins, Harvey.
Berrett-Koehler, 2000
Buku Teks
Arroll, Meg
Thorsons, 2023
Buku Teks SO