Sapalo, I. S. Philippine law on patents, trademarks and copyright (Background reading material on intellectual property, Philippine national supplement).
Cita Chicago (17th ed.)Sapalo, Ignacio S. Philippine Law on Patents, Trademarks and Copyright (Background Reading Material on Intellectual Property, Philippine National Supplement).
Cita MLA (9th ed.)Sapalo, Ignacio S. Philippine Law on Patents, Trademarks and Copyright (Background Reading Material on Intellectual Property, Philippine National Supplement).
Atenció: Aquestes cites poden no estar 100% correctes.