David, T. L. (2008). Effectiveness of communicative language teaching in developing speaking proficiency in english as a second language among unitars students.
Chicagoスタイル(17版)引用形式David, Tiongun Lumbok@. Effectiveness of Communicative Language Teaching in Developing Speaking Proficiency in English as a Second Language Among Unitars Students. 2008.
MLA(9版)引用形式David, Tiongun Lumbok@. Effectiveness of Communicative Language Teaching in Developing Speaking Proficiency in English as a Second Language Among Unitars Students. 2008.
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