Dixson, Robert J., author
Regents Publishing, 1971
Buku Teks
edited by Oscar Williams
Pocket Books, 1955
Buku Teks
English Language Services; editor, Charles J. Hirsch, James A. Curtin
Collier/Macmillan, 1971
Buku Teks
Stevenson, Burton Egbert, author
Henry Holt, 1942
Buku Referensi
Pack, Alice C.
Newbury House Pub., 1980
Buku Teks