Gould, Jean, author
Dodd Mead , 1964
Buku Teks
Hillyer, Robert
Alfred A. Knopf, 1961
Buku Teks
Browning, Robert, author
Cassell, 1907
Buku Teks
Frost, Robert, author
Pocket Books, 1956
Buku Teks
edited by RMW Dixon and Martin Duwell
University of Queensland, 1990
Buku Teks