Brookshear, J. Glenn
Benjamin/Cummings Publishing, Company, Inc., 1994
Buku Teks SO
edited by A. Arnold
Springer-Verlag, 1987
Buku Teks SO
Wulf, William A.
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Buku Teks SO
Brookshear, J. Glenn
Pearson, 2019
Buku Teks SO
Scheid, Francis
McGraw-Hill, 1970
Buku Teks SO