Hillis, N. D. A Man's Value to Society: Studies in Self Culture and Character.
Chicago-čujuhus (17. p.)Hillis, Newell Dwight. A Man's Value to Society: Studies in Self Culture and Character.
MLA-čujuhus (9. p.)Hillis, Newell Dwight. A Man's Value to Society: Studies in Self Culture and Character.
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