Não informado. (1976). American journal of small business. University of Baltimore, School of Business.
Lua i Stíl Chicago (17ú heag.)Não informado. American Journal of Small Business. Baltimore, Md: University of Baltimore, School of Business, 1976.
Lua MLA (8ú heag.)Não informado. American Journal of Small Business. University of Baltimore, School of Business, 1976.
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