Books

• Outline Introduction to Public International Law (co-authored with Supreme Court Justice Antonio EB Nachura, published by Rex Bookstore, 2017; Second Edition 2022)
• No Easy Days (published by Central Books, 2021)
• Natural Law and the Limits of Judicial Power (published by Central Books, 2021)
• Being Right: Ten Years of Trade Tripper (published by Central Books, 2019)
• The Practice of International Law (published by Arellano Law Foundation, 2003)
• Arbitration and Alternative Dispute Resolution: How To Settle International Business Disputes (chapter author, published by the International Trade Centre/UNCTAD/WTO, 2002)

Papers, articles, essays, speeches

• Paper on the proposed draft consolidated Bill “Prohibiting Discrimination on the Basis of Sexual Orientation or Gender Identity (SOGI), Providing Penalties Therefore and for Other Purposes” (delivered before the Committee On Women and Gender Equality, Philippine House of Representatives, 2015)
• Paper on the Bangsamoro Basic Law from the Constitutional and International Law Perspective (delivered before the Ad Hoc Committee on the Bangsamoro Basic Law, Philippine House of Representatives, November 2014)
• Lecture on “The Philippines in the ASEAN Economic Community” (delivered at the Brown Bag Seminar, Embassy of the Republic of Korea, Manila, 2015)
• Lecture on “The World Trade Organization and APEC: Implications to the Philippine Economy” (delivered at the 4th US Embassy Seminar for Regional Media, Manila, 2015)
• Lecture on “Philippine Social Issues and the Constitutional Response to Natural Law” (delivered at the 19th International Law and Religion Symposium, Brigham Young University, 2012)
• Keynote address “ASEAN Integration: Forget About It” (delivered at the 19th National Convention of Philippine Association of Administrators of Student Affairs, 2014)
• Comparative Study on the Different Free Trade Agreements Entered Into by Japan with other Asian Countries (PIDS, 2012)
• RP-US FTA: Trade Remedies, Competition Policy and Government Procurement (PIDS, 2006)
• Sovereignty in Philippine Law and International Economic Law (IBP Law Journal, July 2006)
• Why RP Needs a Trade Representative (TradeExpress Asia, July 2006)
• The Fog of Trade (Lawyers Review, February 2006)
• Customs Clearance in the WTO and ASEAN (Philippine Law Journal, October 2004)
• Trade Remedies and Public Interest (The Practice, July 2004)
• War, Terrorism, and International Law (Arellano Law and Policy Review, December 2002)
• Trade Remedies: Some Definitional Issues (Lawyers Review, November 2002)
• Philippine Challenges in Implementing WTO Obligations (UA&P Roundtable, September 2000)
• International Trade Law and the Environment (Arellano Law and Policy Review, May 2002)
• Anti-Dumping Under Philippine and International Trade Laws (Arellano Law and Policy Review, September 2001)
• Reflections on the International Criminal Court (Lawyers Review, 28 February 2001; co-author)
• ASEAN Investment Report 2004 (prepared and written by PricewaterhouseCoopers for the ASEAN Secretariat, as group leader; 2004)
• Various articles on international trade and natural law in the Businessworld column Being Right (formerly Trade Tripper)
• Various articles on international trade in the Businessworld column Taxwise or Otherwise