Edel, May, author
Little, Brown, 1955
Buku Teks
Murray, Raymond W., author
Bruce Publishing, 1943
Buku Teks
Wendt, Herbert, author
Houghton-Mifflin, 1956
Buku Teks
Howells, William D., author
Doubleday, 1967
Buku Teks
Bellwood, Peter, author
Auckland Collins 1978,
Buku Teks