Gaya APA

Samuelson, Paul A., Nordhaus, William D.. (1995). Economics, 15th ed. (15th.ed.). New York: McGraw Hill.

Gaya Chicago

Samuelson, Paul A., Nordhaus, William D.. Economics, 15th ed.. 15th.ed. New York: McGraw Hill, 1995. Text.

Gaya MLA

Samuelson, Paul A., Nordhaus, William D.. Economics, 15th ed.. 15th.ed. New York: McGraw Hill, 1995. Text.

Gaya Turabian

Samuelson, Paul A., Nordhaus, William D.. Economics, 15th ed.. 15th.ed. New York: McGraw Hill, 1995. Print.