Penson, John B., author
Prentice-Hall, 1982
Buku Teks
Hallman, G. Victor, author
McGraw-Hill, 1987
Buku Teks
Adelman, Philip J., author
Pearson, 2007
Buku Teks
Hicks, Ursula K., author
Kinokuniya , 1959
Buku Teks
Ross, Stephen A., author
Irwin, 1996
Buku Teks