This book contains a collection of important recent writing on left-liberalism, a political philosophy that recognizes both strong liberty rights and strong demands for material equality
^Peter VallentyneLeft libertarianism and it's Critics : The Contemporary Debate by Peter Vallentyne (2001, Hardcover)ISBN 9780312236991 (revised Dec 2015)
^Left-libertarianism And Its Critics: The Contemporary DebateIndigo. ISBN 9780312236991 (revised Dec 2022)