Osborne, Adam
McGraw-Hill, 1983
Buku Teks
Godfrey, J. Terry
Prentice-Hall, 1990
Buku Teks
Bernhard, Robert
Elsevier Int. Bulletins, 1986
Buku Teks
Singh, Avtar
Prentice-Hall, 1989
Buku Teks
Capron, H.L.
The Benjamin / Cumming Publishing Company Inc., 1989
Buku Teks