Citazione Stile APA (7a Edizione)

Sapalo, I. S. (1992). Philippine law on patents, trademarks and copyright (Background reading material on intellectual property, Philippine National Supplement). World Intellectual Property Organization.

Citazione stile Chigago Style (17a edizione)

Sapalo, Ignacio S. Philippine Law on Patents, Trademarks and Copyright (Background Reading Material on Intellectual Property, Philippine National Supplement). [s.l.]: World Intellectual Property Organization, 1992.

Citatione MLA (9a ed.)

Sapalo, Ignacio S. Philippine Law on Patents, Trademarks and Copyright (Background Reading Material on Intellectual Property, Philippine National Supplement). World Intellectual Property Organization, 1992.