Lewis, R. (1961). The managers: A new examination of the English, German, and Marican executive. New York: A Mentor.
शिकागो स्टाइल उद्धरणLewis, Roy. The Managers: A New Examination of the English, German, and Marican Executive. New York: A Mentor, 1961.
एमएलए उद्धरणLewis, Roy. The Managers: A New Examination of the English, German, and Marican Executive. New York: A Mentor, 1961.
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