Knowles, Roger. 200 contractual problems and their solutions / Two hundred contractual problems and their solutions Roger Knowles. - 3rd ed. - West Sussex, UK : Wiley-Blackwell, 2012. - xxiv, 456 p. ; 25 cm. Includes bibliographical references and index. ISBN: 9780470658314 RM332.61 Subjects--Topical Terms: Contracts--Great Britain--Miscellanea.