APA (7th ed.) Citation

Gumpol, W. (2002). Mastery of Sixteen Tenses/ W.Y. Gumpol. Yogyakarta: Kanisius.

Chicago Style (17th ed.) Citation

Gumpol, W.Y. Mastery of Sixteen Tenses/ W.Y. Gumpol. Yogyakarta: Kanisius, 2002.

MLA (8th ed.) Citation

Gumpol, W.Y. Mastery of Sixteen Tenses/ W.Y. Gumpol. Yogyakarta: Kanisius, 2002.

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