APA aipamena

Panopio, R. G. (1999). Personalized system of instruction (PSI) for college algebra. Learning Resource Center, University of the Philippines.

Chicago Style aipamena

Panopio, Rolando G. Personalized System of Instruction (PSI) for College Algebra. Diliman, Quezon City: Learning Resource Center, University of the Philippines, 1999.

MLA aipamena

Panopio, Rolando G. Personalized System of Instruction (PSI) for College Algebra. Learning Resource Center, University of the Philippines, 1999.