Barger, Harold, author
Rand McNally, 1969
Buku Teks
Stanford, Jon D., author
John Wiley & Sons, 1973
Buku Teks
Luckett, Dudley G., author
McGraw-Hill , 1984
Buku Teks
Savage, Donald T., author
John Wiley & Sons, 1977
Buku Teks
Suzuki, Yoshio, author
Yale University Press, 1980
Buku Teks