Rorabacher, Louise E.
Harper & Row Publishers, 1985
Buku Teks
Decker, Randall E.
Little, Brown And Company, 1980
Buku Teks
Brock, Dee, author
John Wiley & Sons, 1978
Buku Teks
Jordan, John E.
Harper & Row, Publishers, 1965
Buku Teks
Sheridan, Harriet W.
Harcourt, Brace & World, Inc., 1966
Koleksi Publik