Madsen, W. G. (1968). From shadowy types to truth: Studies in Milton's symbolism. Yale University Press.
Lua i Stíl Chicago (17ú heag.)Madsen, William G. From Shadowy Types to Truth: Studies in Milton's Symbolism. New Haven: Yale University Press, 1968.
Lua MLA (8ú heag.)Madsen, William G. From Shadowy Types to Truth: Studies in Milton's Symbolism. Yale University Press, 1968.
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