Ona, V. G. M., Pasimio, A. K. S., Pineda, M. C., & Pabre, C. Q. Q. (1997). An Information systems study on the National Kidney and Transplant Institute (NKTI) Billing and Medicare Section. College of Engineering.

Ona, Victor Gabriel M., Anna Katharina S. Pasimio, Michele C. Pineda, и Christian Quincy Q. Pabre. An Information Systems Study on the National Kidney and Transplant Institute (NKTI) Billing and Medicare Section. Diliman, Quezon City: College of Engineering, 1997.

Ona, Victor Gabriel M., et al. An Information Systems Study on the National Kidney and Transplant Institute (NKTI) Billing and Medicare Section. College of Engineering, 1997.