Love, Glen A.
Foresmann, 1969
Buku Teks
edited by Charles Wells Moulton
Gloucester, 1959
Buku Referensi
edited and introduced by Mary Eagleton
Longman, 1991
Buku Teks
Fawcett Publications, Inc., 1966
Buku Teks
Murry, John Middleton, author
Oxford University Press, 1956
Buku Teks