Marsh, R. H. (1965). Four dialectical theories of poetry: An aspect of English neoclassical criticism. University of Chicago Press.
Lua i Stíl Chicago (17ú heag.)Marsh, Robert Harrison. Four Dialectical Theories of Poetry: An Aspect of English Neoclassical Criticism. Chicago: University of Chicago Press, 1965.
Lua MLA (8ú heag.)Marsh, Robert Harrison. Four Dialectical Theories of Poetry: An Aspect of English Neoclassical Criticism. University of Chicago Press, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.