Não informado. (1955). Personnel Management Abstracts. University of Michigan, Graduate School of Business Administration.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Personnel Management Abstracts. Ann Arbor, Mich: University of Michigan, Graduate School of Business Administration, 1955.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Personnel Management Abstracts. University of Michigan, Graduate School of Business Administration, 1955.
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