Wyman, W. F. (1922). Export merchandising. McGraw-Hill Book Co..
Lua i Stíl Chicago (17ú heag.)Wyman, Walter F. Export Merchandising. New York [etc.]: McGraw-Hill Book Co., 1922.
Lua MLA (8ú heag.)Wyman, Walter F. Export Merchandising. McGraw-Hill Book Co., 1922.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.