Gray, Richard, 1944-
American poetry of the twentieth century
Longman, 1991
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Bogan, Louise
Achievement in American poetry, 1900-1950
Henry Regnery, 1951
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Stepanchev, Stephen
American poetry since 1945 : a critical survey
Harper and Row, 1965
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Poets on poetry
edited by Howard Nemerov
Basic Books, 1966
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Contemporary poetry meets modern theory
edited by Antony Easthope, John O. Thompson
Harvester Wheatsheaf, 1991
 Buku Teks SO