Karauba, Anatolij A.
Springer-Verlag, 1993
Buku Teks
Adams, William W.
Prentice-Hall, 1976
Buku Teks SO
Flath, Daniel E.
John Wiley & Sons, 1989
Buku Teks SO
Ireland, Kenneth F.
Springer-Verlag, 1990
Buku Teks SO
Kinsolving, May Risch
International Textbook Co., 1967
Buku Teks