(1971). Playthings: The National Magazine of the Toy Trade ; Directory Issue ; 1971 ; Market Reference Information for Toy Buyers and Toy Manufacturers. Geyer-McAllister Publications.
Lua i Stíl Chicago (17ú heag.)Playthings: The National Magazine of the Toy Trade ; Directory Issue ; 1971 ; Market Reference Information for Toy Buyers and Toy Manufacturers. New York: Geyer-McAllister Publications, 1971.
Lua MLA (8ú heag.)Playthings: The National Magazine of the Toy Trade ; Directory Issue ; 1971 ; Market Reference Information for Toy Buyers and Toy Manufacturers. Geyer-McAllister Publications, 1971.
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