Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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