APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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