Wendt, Herbert, author
Houghton-Mifflin, 1956
Buku Teks
Howells, William D., author
Doubleday, 1967
Buku Teks
Pfeiffer, John E., author
Harper & Row, 1969
Buku Teks
Murray, Raymond W., author
Bruce Publishing, 1943
Buku Teks
Edel, May, author
Little, Brown, 1955
Buku Teks