APA (7th ed.) Zitazioa
Ingram, J. C. (1966). International economic problems. John Wiley & Sons.
Chicago Style (17th ed.) Zitazioa
Ingram, James C. International Economic Problems. New York: John Wiley & Sons, 1966.
MLA (9th ed.) Zitazioa
Ingram, James C. International Economic Problems. John Wiley & Sons, 1966.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.