Eckersley, C. (1952). English comercial practice and correspondence. Lengmans.
Chicago Style (17th ed.) CitationEckersley, C.E. English Comercial Practice and Correspondence. Lengmans, 1952.
MLA引文Eckersley, C.E. English Comercial Practice and Correspondence. Lengmans, 1952.
警告：這些引文格式不一定是100％准確.