CERTO, S. C. (1994). Modern Management: Diversity, quality, ethics and the global enviroment/ Samuel C. Certo. Allyn & Bacon.
Lua i Stíl Chicago (17ú heag.)CERTO, Samuel C. Modern Management: Diversity, Quality, Ethics and the Global Enviroment/ Samuel C. Certo. Allyn & Bacon, 1994.
Lua MLA (8ú heag.)CERTO, Samuel C. Modern Management: Diversity, Quality, Ethics and the Global Enviroment/ Samuel C. Certo. Allyn & Bacon, 1994.
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