APA (7th ed.) Citation

Samuelson, P. A., & Nordhaus, W. D. (1989). Economics (13th ed.). McGraw-Hill National Book Store.

Chicago Style (17th ed.) Citation

Samuelson, Paul Anthony, and William D. Nordhaus. Economics. 13th ed. New York, Metro Manila: McGraw-Hill National Book Store, 1989.

MLA (9th ed.) Citation

Samuelson, Paul Anthony, and William D. Nordhaus. Economics. 13th ed. McGraw-Hill National Book Store, 1989.