Alexander, L. G. (1967). First things first: An integrated course for beginners. London, UK: Longman.
Trích dẫn kiểu ChicagoAlexander, L G. First Things First: An Integrated Course for Beginners. London, UK: Longman, 1967.
MLA citiranjeAlexander, L G. First Things First: An Integrated Course for Beginners. London, UK: Longman, 1967.
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