Edgley, R. (1969). Reason in theory and practice. Hutchinson University library.
Tohutoru Kātū Chicago (17th ed.)Edgley, Roy. Reason in Theory and Practice. London: Hutchinson University library, 1969.
Tohutoro MLA (9th ed.)Edgley, Roy. Reason in Theory and Practice. Hutchinson University library, 1969.
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