Gaya APA

Samuelson, Paul A, Nordhaus, William D. (1992). Economics (4). New York: Mc Graw Hill.

Gaya Chicago

Samuelson, Paul A, Nordhaus, William D. Economics. 4 New York: Mc Graw Hill, 1992. Text.

Gaya MLA

Samuelson, Paul A, Nordhaus, William D. Economics. 4 New York: Mc Graw Hill, 1992. Text.

Gaya Turabian

Samuelson, Paul A, Nordhaus, William D. Economics. 4 New York: Mc Graw Hill, 1992. Print.