APA (7th ed.) Citation

Samuelson, P. A., & Nordhaus, W. D. (1990). Arthika vidyava. Sri Lankave Amerikanu Adhyayana Sangamaya.

Chicago Style (17th ed.) Citation

Samuelson, Paul A., and William D. Nordhaus. Arthika Vidyava. Colombo: Sri Lankave Amerikanu Adhyayana Sangamaya, 1990.

MLA (9th ed.) Citation

Samuelson, Paul A., and William D. Nordhaus. Arthika Vidyava. Sri Lankave Amerikanu Adhyayana Sangamaya, 1990.

Warning: These citations may not always be 100% accurate.