Matthiessen, F.O.
The Achievement of T.S. Eliot: An Essay on the Nature Of Poetry
Oxford University Press, 1959
 Buku Teks
Peters, Wilhelmus Antonius Maria
Gerard Manley Hopkins : a critical essay towards the understanding of his poetry / W.A.M. Peters
Oxford University Press, 1947
 Buku Teks
Poetry
Chicago : The Modern Poetry Association
 Majalah, Jurnal, Buletin
Portnoy, Ethel
Genietingen essay
Meulenhoff, 1998
 Buku Teks
The art of the essay
edited by Leslie A. Fiedler
Thomas Y. Crowell, 1958
 Buku Teks