APA (7th ed.) Zitazioa
Pindyck. Microeconomics. Pearson Education.
Chicago Style (17th ed.) Zitazioa
Pindyck. Microeconomics. Pearson Education.
MLA (9th ed.) Zitazioa
Pindyck. Microeconomics. Pearson Education.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.