Fox, David J.
Appletton century crofts , 1982
Buku Teks
edited by Shirley M. Stinson and Janet C. Kerr
Charles Press , 1986
Buku Teks
Sweeney, Mary Anne, author
J.B. Lippincott, 1981
Buku Teks
Lippincott , 2004
Buku Teks
edited by Phyllis J. Verhonick
Little, Brown, 1977
Buku Teks