Its case-references and notes apparatus are excellent and the overall view it opens to early 21st century international law has an unparalleled combination of depth and width ... the most impressive English-language textbook available.
Martti Koskenniemi, British Yearbook of International Law (review of the eighth edition)
Brownlie's Principles has established itself as a book of real value and authority for students, academics and practitioners.
Samuel Wordsworth, Cambridge Journal of International and Comparative Law (review of the eighth edition)
[T]his is a very impressive work, wide-ranging in scope and nuanced in content, just as one would expect ... delivering what seems to be at the moment the best single-author English-language international law textbook. It is highly recommended, both as a student text and as a persuasive authority for the practice of international law.
Martins Paparinskis, International and Comparative Law Quarterly (review of the eighth edition)