Blanchard, Paul
Brooks/Cole, 1996
Buku Teks
Agnew, Ralph Palmer
McGraw-Hill, 1160
Buku Teks SO
Ross, Shepley L.
McGraw-Hill, 1984
Buku Teks SO
Ross, Shepley L.
Xerox College Publishing, 1964
Buku Teks SO
Birkhoff, Garrett
John Wiley & Sons, 1978
Buku Teks