Pinter, Charles C.
McGraw-Hill, 1982
Buku Teks
Fraleigh, John B.
Addison-Wesley Publishing Co., 1994
Buku Teks
Fraleigh, John B.
Addison-Wesley, 1998
Buku Teks
Gilligan, Lawrence G., author
D.C. Heath, 1985
Buku Teks
Carman, Robert A., author
John Wiley & Sons, 1982
Buku Teks