APA (7e ed.) Bronvermelding

University of the Philippines (Los Baños). Learning Resource Center, Panopio, R. G., Elec, B. M., Lerios, M. C., Belarmino, M. C., & Velasquez, G. A. (1999). Workbook for PSI for college algebra. Learning Resource Center.

Chicago (17e ed.) Bronvermelding

University of the Philippines (Los Baños). Learning Resource Center, Rolando G. Panopio, Bernarda M. Elec, Marcelina C. Lerios, Myrna C. Belarmino, en Gemma A. Velasquez. Workbook for PSI for College Algebra. Quezon City: Learning Resource Center, 1999.

MLA (9e ed.) Bronvermelding

University of the Philippines (Los Baños). Learning Resource Center, et al. Workbook for PSI for College Algebra. Learning Resource Center, 1999.