You have read a book called Goff and Jones: The Law of Restitution. 7th ed. published by Sweet and Maxwell in 2009. The reference you used was from page 254. It was written by Gareth Jones.
Construct an OSCOLA style FOOTNOTE reference for this book. Refer back to the OSCOLA LEAP Online page if you get stuck.
Drag and drop the parts in order to form the reference.
When you think your reference is correct, select "Check" to check your answer.