World Intellectual Property Organization & Sapalo, I. S. (1988). Background reading material on intellectual property system of the Philippines (Rev. ed. 1994.). World Intellectual Property Organization.
Citace podle Chicago (17th ed.)World Intellectual Property Organization a Ignacio S. Sapalo. Background Reading Material on Intellectual Property System of the Philippines. Rev. ed. 1994. [Geneva, Switzerland]: World Intellectual Property Organization, 1988.
Citace podle MLA (9th ed.)World Intellectual Property Organization a Ignacio S. Sapalo. Background Reading Material on Intellectual Property System of the Philippines. Rev. ed. 1994. World Intellectual Property Organization, 1988.
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