APA (7th ed.) Zitazioa

Horn, P. V., & Gomez, H. (1959). International trade: Principles and practices (4th ed.). Prentice-Hall.

Chicago Style (17th ed.) Zitazioa

Horn, Paul V., eta Henry Gomez. International Trade: Principles and Practices. 4th ed. The United States of America: Prentice-Hall, 1959.

MLA (9th ed.) Zitazioa

Horn, Paul V., eta Henry Gomez. International Trade: Principles and Practices. 4th ed. Prentice-Hall, 1959.