Healy, R. J. (1971). Industrial security management: A cost effective approach. American Management Association.
शिकागो स्टाइल उद्धरणHealy, Richard J. Industrial Security Management: A Cost Effective Approach. USA: American Management Association, 1971.
एमएलए उद्धरणHealy, Richard J. Industrial Security Management: A Cost Effective Approach. American Management Association, 1971.
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