Não informado. (1955). Personnel Management Abstracts. University of Michigan, Graduate School of Business Administration.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Personnel Management Abstracts. Ann Arbor, Mich: University of Michigan, Graduate School of Business Administration, 1955.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Personnel Management Abstracts. University of Michigan, Graduate School of Business Administration, 1955.
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