Wright, H. B. (1975). Executive ease and dis-ease.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWright, Henry Beric. Executive Ease and Dis-ease. Epping, 1975.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWright, Henry Beric. Executive Ease and Dis-ease. 1975.
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