edited by John A. Dean, Norbert Adolph Lange
McGraw-Hill, 1985
Buku Referensi
Gijsen, Marnix, author
Meulenhoff, 1966
Buku Teks
Hall, Gary D., author
Prentice-Hall, 1992
Buku Teks
Krzanowski, Joseph, author
McGraw-Hill, 2003
Buku Teks
edited by Daniel P. Stites, Abba I. Terr, and Tristram G. Parslow
Prentice-Hall, 1997
Buku Teks