Morris, Percy A.
Houghton Mifflin, 1975
Buku Referensi
Hook, Patrick
Gramercy Books, 1998
Buku Referensi
Valid, R.
John Wiley & Sons, 1995
Buku Teks
Kollar, L.
John Wiley & Sons, 1984
Buku Teks
Schock, Hans-Joachim, author
Birkha user Verlag, 1997
Buku Teks