pdf online search and view

Austrian School of economics. Alfred Marshall, 1890. Principles of Economics, 8th ed., 1920. Influence: Standard text for generations of economics students

New Palgrave: A Dictionary of Economics, v. 3, p. 144.    • Posner, Richard A. (1972). Economic Analysis of Law. Aspen, 7th ed., 2007) ISBN 978-0-7355-6354-4