APA

Salvatore D., . (1996). Principles of Economics. New York: McGraw-Hill.

Chicago

Salvatore D, . 1996. Principles of Economics. New York: McGraw-Hill.

Harvard

Salvatore D., . (1996). Principles of Economics. New York: McGraw-Hill.

MLA

Salvatore D, . Principles of Economics. New York: McGraw-Hill. 1996.