Gresser, Julian, author
MIT Press, 1981
Buku Teks
Ministry of Foreign Affairs, Japan, 1974
Buku Teks
Rodgers, William H., author
St. Paul Minn, 1977
Buku Teks
Rodgers, William H., author
West Publishing, 1994
Buku Teks
Kubasek, Nancy K., author
Pearson - Prentice Hall, 2005
Buku Teks