Hatcher, Jeffrey
Story Press, 1996
Buku Teks
Shannon, Faith
Reed International Books, 1987
Buku Referensi
Landau, Sidney I.
Cambridge University Press, 2001
Buku Referensi
Krevitsky, Nik
Reinhold Book, 1964
Buku Teks
Martel, Myles
Dow Jones-Irwin, 1989
Buku Teks