Gartner, Leslie P.
Wolters Kluwer, 2014
Buku Teks SO
Cartner, Leslie
J.B. Lippincott, 2008
Buku Teks
Gartner, Leslie P.
Lippincott Willims & Wilkins, 2006
Buku Teks SO
Ross, Michael H.
Harper & Row, 1985
Buku Teks SO
Telford, Sam R.
CRC Press, 2009
Buku Referensi