Traister, John E.
Prentice-Hall, 1981
Buku Teks SO
Lair, E.A.
McGraw-Hill Book Company, Inc , 1947
Buku Teks SO
Kubba, Sam
McGraw-Hill, 2009
Buku Teks
Tondo, Clovis L.
Prentice-Hall, 1992
Buku Teks SO
Bajpai, Avi C.
John Wiley & Sons, 1983
Buku Teks SO