Global Issues in Legal Ethics by James E Moliterno, published by Gale Cengage.
This book is designed to facilitate the introduction of international, transnational, and comparative law issues into a course on Professional Responsibility. The book is very accessible for law students (and their professors). The chapters can be used in any combination and in any order. The book can be assigned or recommended as optional reading to supplement a domestic-only course to advance the students' understanding of their own system.