APA aipamena

Sowell, T. (2015). Basic economics (5th ed.). New York, NY 10107: Basic Books.

Chicago Style aipamena

Sowell, Thomas. Basic Economics. 5th ed. New York, NY 10107: Basic Books, 2015.

MLA aipamena

Sowell, Thomas. Basic Economics. 5th ed. New York, NY 10107: Basic Books, 2015.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.