Gaya APA

Samuelson, P, A., Nordhaus, W, D. (1998). Microeconomics (16th ed). New York: Irwin McGraw-Hill.

Gaya MLA

Samuelson, Paul, A.., Nordhaus, William, D.. "Microeconomics". 16th ed New York: Irwin McGraw-Hill, 1998. Text.