APA (7th ed.) Citation

Tupas, T. R. F. (2002). Second language teaching. University of the Philippines Open University.

Chicago Style (17th ed.) Citation

Tupas, T. Ruanni F. Second Language Teaching. Diliman, Quezon City: University of the Philippines Open University, 2002.

MLA (9th ed.) Citation

Tupas, T. Ruanni F. Second Language Teaching. University of the Philippines Open University, 2002.