Peñafiel Arcos, E. (1999). Stages of the learning process aimed at the development of oral fluency with the students of the four courses in the San Antonio de Pauda High Schoool in Tulcan City province of Carchi.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Peñafiel Arcos, Edison. Stages of the Learning Process Aimed at the Development of Oral Fluency with the Students of the Four Courses in the San Antonio De Pauda High Schoool in Tulcan City Province of Carchi. 1999.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)Peñafiel Arcos, Edison. Stages of the Learning Process Aimed at the Development of Oral Fluency with the Students of the Four Courses in the San Antonio De Pauda High Schoool in Tulcan City Province of Carchi. 1999.
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