Allan, D. (2004). Placement test 1: Marking kit with user's guide and diagnostic key. Oxford: Oxford University Press.
शिकागो स्टाइल उद्धरणAllan, Dave. Placement Test 1: Marking Kit With User's Guide and Diagnostic Key. Oxford: Oxford University Press, 2004.
एमएलए उद्धरणAllan, Dave. Placement Test 1: Marking Kit With User's Guide and Diagnostic Key. Oxford: Oxford University Press, 2004.
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