Usry, Milton F.
South Western, 1988
Buku Teks
Pacsy, Vivian A.
McGraw-Hill, 1986
Buku Teks
Carter, William K., 1951-
Dame/Thomson Learning, 2002
Buku Teks
Hammer, Lawrence H.
South-Western, 1993
Buku Teks
Moriarity, Shane
John Wiley & Sons, 1991
Buku Teks