APA aipamena

Gravelle,Hugh. (2008). Microeconomics (3.). Pearson.

Chicago Style aipamena

Gravelle,Hugh. Microeconomics. 3. Noida: Pearson, 2008.

MLA aipamena

Gravelle,Hugh. Microeconomics. 3. Pearson, 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.