__PRESENT Principles of Contract Law , 7 th edition, remains Australia's premier text for students of contract law. The new edition has been substantially revised and updated, including the following: the discussion of electronic transactions in the chapters on agreement and formalities has been revised and updated; the estoppel chapter discusses Guest v Guest [2022] UKSC 27; the restitution chapter has been updated in light of Redland City Council v Kozik [2024] HCA 7; the implied terms chapter has been substantially revised in light of Realestate.com.au