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Ayrton, Michael, A. J. Gossage, W. F. Jackson Knight, Alexander Gordon McKay, Brooks Otis, J. H. Whitfield, R. D. Williams, D. E. W. Wormell, and Donald R. Dudley. Virgil. New York: Basic Books, 1969.

Ayrton, Michael, et al. Virgil. New York: Basic Books, 1969.