Codilla, B. N. (1974). The development of the teaching of English as a second language in the public elementary schools of the Philippines [microform]. Photoduplication Service, University of the Philippines Library.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Codilla, Balbina N. The Development of the Teaching of English as a Second Language in the Public Elementary Schools of the Philippines [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1974.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)Codilla, Balbina N. The Development of the Teaching of English as a Second Language in the Public Elementary Schools of the Philippines [microform]. Photoduplication Service, University of the Philippines Library, 1974.
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