Samuelson, Paul A. 1915-; Mandel, Michael J; Nordhaus, William D. (1985). Economics / Paul A. Samuelson, William D. Nordhaus ; with contribution by Michael J. Mandel. New York :: McGraw-Hill ,.
Samuelson, Paul A. 1915-; Mandel, Michael J; Nordhaus, William D. Economics / Paul A. Samuelson, William D. Nordhaus ; with contribution by Michael J. Mandel. New York :: McGraw-Hill ,, 1985
Samuelson, Paul A. 1915-; Mandel, Michael J; Nordhaus, William D. Economics / Paul A. Samuelson, William D. Nordhaus ; with contribution by Michael J. Mandel. New York :: McGraw-Hill ,, 1985.