Derek Parfit

title	media type	ISBN-13	year of publication
On What Matters: Two-volume set	Hardcover	978-0-19-926592-3	2011
On What Matters: Volume One	Paperback	978-0-19-968103-7	2013
On What Matters: Volume One	Hardcover	978-0-19-957280-9	2011
On What Matters: Volume Two: 2	"	978-0-19-957281-6	2011
On What Matters: Volume Two	Paperback	978-0-19-968104-4	2013
Razones y personas	Tapa dura	978-84-7774-770-3	2005
Reasons and Persons	Paperback	978-0-19-824908-5	1986