Gray, Richard, 1944-
American poetry of the twentieth century
Longman, 1991
 Buku Teks SO
Bogan, Louise
Achievement in American poetry, 1900-1950
Henry Regnery, 1951
 Buku Teks SO
The new American poetry : 1945-1960
edited by Donald M. Allen
Grove Press, 1960
 Buku Teks SO
Contemporary american poetry
edited by Howard Nemerov
Voice of America Forum Lectures, 1973
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Grierson, Herbert John Clifford, Sir, 1866-1960
A critical history of English poetry
Chatto and Windus, 1950
 Buku Teks SO