Sroge, M. (1990). 101 tips for more profitable catalogs. NTC Business Books.
Lua i Stíl Chicago (17ú heag.)Sroge, Maxwell. 101 Tips for More Profitable Catalogs. Lincolnwood, Ill: NTC Business Books, 1990.
Lua MLA (9ú heag.)Sroge, Maxwell. 101 Tips for More Profitable Catalogs. NTC Business Books, 1990.
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