Langdon, D. B. (1951). Practice of book keeping with some opinions on its nature, status and future. Phoneniox house.
शिकागो स्टाइल उद्धरणLangdon, Daviers B.N. Practice of Book Keeping with Some Opinions on Its Nature, Status and Future. London: Phoneniox house, 1951.
एमएलए उद्धरणLangdon, Daviers B.N. Practice of Book Keeping with Some Opinions on Its Nature, Status and Future. Phoneniox house, 1951.
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