Borroff Marie. "Robert Frost's New Testament: The Uses of Simplicity." Robert Frost Ed. Harold Bloom. New York. Chelsea House, 1986.
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Traschen, Isadore. "Robert Frost: Some Divisions in a Whole Man." Critical Essays on Robert Frost. Yale Review. (1965): 170-180.
The Poetry of Robert Frost
Cox, James M. "Robert Frost and the Edge of the Clearing." Critical Essays on Robert Frost. The Virginia Quarterly Review. (1959): 144-154.
The Poetry of Robert Frost
French, Roberts W. "Robert Frost and the Darkness of Nature." Critical Essays on Robert Frost. The English Record. (1978): 155-162.
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Cook, Reginald L. The Dimensions of Robert Frost New York. Rinehart & Co. Inc., 1958.
Robert Frost