Gravelle, H. a. R. (2004). Microeconomics (2.).
Chicago Style aipamenaGravelle, Hugh and Rees. Microeconomics. 2. Pearson Education, New Delhi, 2004.
MLA aipamenaGravelle, Hugh and Rees. Microeconomics. 2. 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.