National Book Store. Editorial Staff. (1999). Intellectual property code (Republic Act no. 8293): With implementing rules and regulations and related laws (Revised edition.). National Book Store.
Lua i Stíl Chicago (17ú heag.)National Book Store. Editorial Staff. Intellectual Property Code (Republic Act No. 8293): With Implementing Rules and Regulations and Related Laws. Revised edition. Mandaluyong City: National Book Store, 1999.
Lua MLA (9ú heag.)National Book Store. Editorial Staff. Intellectual Property Code (Republic Act No. 8293): With Implementing Rules and Regulations and Related Laws. Revised edition. National Book Store, 1999.
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