Samuelson, Paul A., 1915-; Nordhaus, William D.. (1992). Economics / Paul A. Samuelson, William D. Nordhaus. New York :: McGraw-Hill Kogakusha,.
Samuelson, Paul A., 1915-; Nordhaus, William D.. Economics / Paul A. Samuelson, William D. Nordhaus. New York :: McGraw-Hill Kogakusha,, 1992
Samuelson, Paul A., 1915-; Nordhaus, William D.. Economics / Paul A. Samuelson, William D. Nordhaus. New York :: McGraw-Hill Kogakusha,, 1992.