Lane, Robert E., author
Prentice-Hall, 1964
Buku Teks
Hicks, Ursula K., author
Kinokuniya , 1959
Buku Teks
Jefkins, Frank William, author
Erlangga, 1996
Buku Teks
Albig, WIlliam
McGraw-Hill, 1939
Buku Teks
Gamble, Teri Kwal, author
Allyn and Bacon, 1994
Buku Teks