Bruno Simma, ed., The Charter of the United Nations: A Commentary (Oxford, 2013)
- This is the third edition of a classic source that provides article-by-article commentary on the UN Charter. The new edition includes a chapter on UN reform.
James Crawford, Brownlie’s Principles of Public International Law (Oxford, 2012)
- Crawford’s clear writing and substantial revision of this classic treatise make it an excellent starting point for public international law research.
Treaty Section of the UN’s Office of Legal Affairs, Treaty Handbook (2012)
- Revised in 2012, this publicly-accessible online Handbook highlights many aspects of treaty law and practice. It provides many cites to relevant articles of the Vienna Convention on the Law of Treaties. It also includes a helpful glossary of key treaty terms (such as accession and ratification), which begins on p. 62.
Duncan B. Hollis, ed., The Oxford Guide to Treaties (Oxford, 2012)
- This new source reviews concepts ranging from making to terminating treaties. It includes a chapter on the Vienna Convention rules about treaty interpretation.