Cita APA (7th ed.)

Horn, P. V. (1951). International trade: Principles and practices. Prentice-Hall.

Cita Chicago (17th ed.)

Horn, Paul Valentine. International Trade: Principles and Practices. New York: Prentice-Hall, 1951.

Cita MLA (9th ed.)

Horn, Paul Valentine. International Trade: Principles and Practices. Prentice-Hall, 1951.