"William Sydney Porter (O. Henry) : a reference guide / Richard C. Harris, cop. 1980. - . - LC Authorities. - http://authorities.loc.gov. - 2002-11-13"@fr . . . "1994-01-24" . . "male" . . "Richard C." . . . . "2015-03-13" . . . . "Richard C. Harris" . . . "ISNI" . . . . "2015-03-13"^^ . "Richard C. Harris"@fr . . "0000000080822530" . . "12963580"^^ . . "Harris" .