APA aipamena

SAMUELSON, P. A., & DONORHAUS, W. D. (1985). Economics.-- ed.12. McGraw-hill.

Chicago Style aipamena

SAMUELSON, Paul A., and William D. DONORHAUS. Economics.-- Ed.12. New York: McGraw-hill, 1985.

MLA aipamena

SAMUELSON, Paul A., and William D. DONORHAUS. Economics.-- Ed.12. McGraw-hill, 1985.