Samuelson, Paul A. Economics : an introductory analysis / Paul A. Samuelson, William Nordhaus, William D. Nordhaus. - Internat.15r.e. ed. - [S.l.] : McGraw-Hill Education (ISE Editions), 1995. - 832 p. Import. ISBN: 0071139141 (paperback) 9780071139144 (paperback)