*''Four Days, 40 Hours: Reporting a revolution in work and leisure'' by Riva Poor. Foreword by [[Paul A. Samuelson]] ISBN 0-330-23389-0 | *''Four Days, 40 Hours: Reporting a revolution in work and leisure'' by Riva Poor. Foreword by [[Paul A. Samuelson]] ISBN 0-330-23389-0 |