Treaty Reference Guide
This reference guide is available free on the website of the United Nations Treaty Collection. Part I explains and defines the different types of international instrument, such as treaties, conventions, charters, protocols, declarations, memoranda of understanding and exchanges of notes. Part II is a glossary of terms relating to treaty actions, such as accession, deposit, entry into force, modification, ratification and signature ad referendum. The guide is in available in English or French; html, pdf or plain text versions are provided.