Harold, F. M. (1986). The vital force: A study of bioenergetics. New York: W. H. Freeman and Company.
शिकागो स्टाइल उद्धरणHarold, Franklin M. The Vital Force: A Study of Bioenergetics. New York: W. H. Freeman and Company, 1986.
एमएलए उद्धरणHarold, Franklin M. The Vital Force: A Study of Bioenergetics. New York: W. H. Freeman and Company, 1986.
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