APA استشهاد

Samuelson, P. A. N. (2005). Economics (18th ed.). Tata McGraw Hill.

استشهاد بنمط شيكاغو

Samuelson, Paul A Nordhaus. Economics. 18th ed. N.Delhi: Tata McGraw Hill, 2005.

MLA استشهاد

Samuelson, Paul A Nordhaus. Economics. 18th ed. Tata McGraw Hill, 2005.