Blanchard, Paul, author
Brooks/Cole, 1996
Buku Teks
Agnew, Ralph Palmer, author
McGraw-Hill, 1160
Buku Teks SO
Ross, Shepley L., author
McGraw-Hill, 1984
Buku Teks SO
Ross, Shepley L., author
Xerox College Publishing, 1964
Buku Teks SO
edited by M. Farkas
North-Holland, 1977
Buku Teks SO