This work is part of the Lecture Notes series, which is intended primarily for the undergraduate law degree or common professional examination student. It is also intended to be useful to other students studying law as part of their course. The books provide valuable assistance to those who need clear but thorough treatment of law subjects, incorporating recent developments and proposals for reform as appropriate. The treatment of each subject is precise but comprehensive. The material in the books is presented logically, starting with the basic issues of each topic and moving on to more refined matters. At the end of each chapter, the issues discussed in that chapter, together with relevant cases and statutes, are summarized on one perforated sheet. This enables the reader to file the summary sheet for easy access during subsequent revision. Each book also contains full footnote references and a recommended reading list. This particular work sets out the principles of commercial law derived from statutes and cases in such a way that the reader is able to understand not only what the law is, but also how it functions, and whether it functions effectively. Topics covered include sale of goods, agency, international law and consumer credit.