Danielson, G. L. (George Lord)
Butterworth, 1981
Buku Teks
Freeman, Roger L.
John Wiley & Sons, 1991
Buku Referensi
Roddy, Dennis
Erlangga, 1986
Buku Teks
Shrader, Robert L.
Erlangga, 1991
Buku Teks
editor, Umberto Leanza
Oceana Publications, 1993
Buku Referensi