Citazione Stile APA (7a Edizione)

Trottman, N. S. (1966). History of the Union Pacific: A financial and economic survey. Kelley.

Citazione stile Chigago Style (17a edizione)

Trottman, Nelson Smith. History of the Union Pacific: A Financial and Economic Survey. New York: Kelley, 1966.

Citatione MLA (8a ed.)

Trottman, Nelson Smith. History of the Union Pacific: A Financial and Economic Survey. Kelley, 1966.