Donovan, P. (1978). Basic English for Science: Peter Donovan. Oxford: Oxford University.
Trích dẫn kiểu ChicagoDonovan, Peter. Basic English for Science: Peter Donovan. Oxford: Oxford University, 1978.
Deismireacht MLADonovan, Peter. Basic English for Science: Peter Donovan. Oxford: Oxford University, 1978.
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