Lewis, H. D. The H.B. Action memorial lecture: solitude in philosophy and literature: Hywel D. Lewis. Philosophy and literature.(1984).
Chicago-viite (17. p.)Lewis, Hywel D. "The H.B. Action Memorial Lecture: Solitude in Philosophy and Literature: Hywel D. Lewis." Philosophy and Literature.(1984) .
MLA-viite (8. p.)Lewis, Hywel D. "The H.B. Action Memorial Lecture: Solitude in Philosophy and Literature: Hywel D. Lewis." Philosophy and Literature.(1984), .
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