Phillips, Anthony J., author
Elsevier, 2008
Buku Referensi
Baird, Colin, author
W.H. Freemen and Company , 2008
Buku Teks
Solomons, T. W. Graham, author
John Wiley & Sons, 1976
Buku Teks
by Horace D. Crockford [and others]
John Wiley & Sons, 1975
Buku Teks
Anderson, Franz E., author
Burgess Publishing, 1979
Buku Teks