Nunz, Gregory J.
McGraw-Hill, 1967
Buku Teks
chief editor, Walter Ledermann; edtor, Steven Vajda
John Wiley & Sons, 1980
Buku Referensi
Grob, Bernard
Glencoe, 1992
Buku Teks
Barker, Forrest
Prentice-Hall, 1989
Buku Teks
Cooke, Nelson M.
McGraw-Hill, 1960
Buku Teks