Pender, Harold, author
John Wiley & Sons, 1950
Buku Referensi
edited by Howard Bierman
McGraw-Hill, 1983
Buku Teks
Benedict, R. Ralph, author
Prentice-Hall, 1976
Buku Teks
Hafer, Charles R., author
McGraw-Hill, 1980
Buku Teks
Charles A Happer
USA : McGraw-Hill, Inc., 1970
Buku Teks