APA استشهاد

Samuelson, P., & Nordhaus, W. (1998). Economics/16e (16th ed.). Tata McGraw Hill.

استشهاد بنمط شيكاغو

Samuelson, Paul.A, و William.D Nordhaus. Economics/16e. 16th ed. New Delhi: Tata McGraw Hill, 1998.

MLA استشهاد

Samuelson, Paul.A, و William.D Nordhaus. Economics/16e. 16th ed. Tata McGraw Hill, 1998.