Não informado. (2012). The Academic Executive Brief. Editions Elsevier.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. The Academic Executive Brief. San Diego, Calif: Editions Elsevier, 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. The Academic Executive Brief. Editions Elsevier, 2012.
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