APA (7th ed.) Zitazioa
Frumkin, N. (2006). Guide to economic indicators (4th ed.). M.E. Sharpe.
Chicago Style (17th ed.) Zitazioa
Frumkin, Norman. Guide to Economic Indicators. 4th ed. Armonk, N.Y.: M.E. Sharpe, 2006.
MLA (9th ed.) Zitazioa
Frumkin, Norman. Guide to Economic Indicators. 4th ed. M.E. Sharpe, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.