Horn, P. V., & Gomez, H. (1959). International trade: Principles and practices (4th ed.). Prentice-Hall.
Παραπομπή σε μορφή Chicago (17η εκδ.)Horn, Paul V., και Henry Gomez. International Trade: Principles and Practices. 4th ed. The United States of America: Prentice-Hall, 1959.
Παραπομπή σε μορφή MLA (9th εκδ.)Horn, Paul V., και Henry Gomez. International Trade: Principles and Practices. 4th ed. Prentice-Hall, 1959.