Tohutoro APA (7th ed.)

Samuelson, P. A., & Nordhaus, W. D. (1998). Economics (16th ed.). Irwin/McGraw-Hill.

Tohutoru Kātū Chicago (17th ed.)

Samuelson, Paul A., me William D. Nordhaus. Economics. 16th ed. Boston, Mass: Irwin/McGraw-Hill, 1998.

Tohutoro MLA (9th ed.)

Samuelson, Paul A., me William D. Nordhaus. Economics. 16th ed. Irwin/McGraw-Hill, 1998.