Strandberg, V. H. (1971). Robert Penn Warren. In W. B. Fleishmann (Ed.), Encyclopedia of World Literature in the Twentieth Century (Vol. III). revised and enlarged Second Edition, Leonard S. Klein, General Editor (New York: Frederick Ungar Publishing Company, 1984).

Strandberg, V. H. “Robert Penn Warren.” In Encyclopedia of World Literature in the Twentieth Century, edited by W. B. Fleishmann, Vol. III. revised and enlarged Second Edition, Leonard S. Klein, General Editor (New York: Frederick Ungar Publishing Company, 1984), 1971.

Strandberg VH. Robert Penn Warren. In: Fleishmann WB, editor. Encyclopedia of World Literature in the Twentieth Century. revised and enlarged Second Edition, Leonard S. Klein, General Editor (New York: Frederick Ungar Publishing Company, 1984); 1971.

Strandberg, V. H. “Robert Penn Warren.” Encyclopedia of World Literature in the Twentieth Century, edited by W. B. Fleishmann, vol. III, revised and enlarged Second Edition, Leonard S. Klein, General Editor (New York: Frederick Ungar Publishing Company, 1984), 1971.

Strandberg VH. Robert Penn Warren. In: Fleishmann WB, editor. Encyclopedia of World Literature in the Twentieth Century. revised and enlarged Second Edition, Leonard S. Klein, General Editor (New York: Frederick Ungar Publishing Company, 1984); 1971.