Allen, Louis A., author
McGraw-Hill Kogakusha, 1958
Buku Teks
Burgess, Giles H., author
Prentice-Hall, 1989
Buku Teks
Burgess, Giles H., author
Prentice-Hall, 1989
Buku Teks
Pepall, Lynne, author
Thomson , 2005
Buku Teks
Champion, Dean J., author
McGraw-Hill, 1975
Buku Teks