The Oxford University Standard for Citation of Legal Authorities (OSCOLA) is a style guide that provides the modern method of legal citation in the United Kingdom; the style itself is also referred to as OSCOLA. First developed by Peter Birks of the University of Oxford Faculty of Law, and now in its 4th edition (2012, Hart Publishing, ISBN 978-1-84946-367-6),[1] it has been adopted by most law schools and many legal publishers in the United Kingdom. An online supplement (developed for the third edition) is available for the citation of international legal cases, not covered in the main guide.[2]