A Ward Lock Book, 1997
Buku Referensi
Russell B Gunia
USA : ASM International, 1977
Buku Teks
edited by Brian Sutton-Smith [and others]
Utah State University Press, 1999
Buku Referensi
Collin, Simon
McGraw-Hill, 1995
Buku Teks
Wilhide, Elizabeth
Tabori & Chang, 1998
Buku Teks