Cita APA (7th ed.)

Litwack, L. F., & Jordan, W. D. (1991). The United States: Becoming a world power (Seventh Edition.). Prentice Hall.

Cita Chicago (17th ed.)

Litwack, Leon F., i Winthrop D. Jordan. The United States: Becoming a World Power. Seventh Edition. Englewood Cliffs, New Jersey: Prentice Hall, 1991.

Cita MLA (9th ed.)

Litwack, Leon F., i Winthrop D. Jordan. The United States: Becoming a World Power. Seventh Edition. Prentice Hall, 1991.