Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

Horn, Paul Valentine, e Henry Gomez. International Trade: Principles and Practices. Englewood Cliffs, NJ: Prentice-Hall, 1959.

Citatione MLA (9a ed.)

Horn, Paul Valentine, e Henry Gomez. International Trade: Principles and Practices. Prentice-Hall, 1959.