Citazione APA

Johnson, E. R., & Van Metre, T. W. (1916). Principles of railroad transportation. D. Appleton.

Stile di citazione Chicago

Johnson, Emory R., e T. W. Van Metre. Principles of Railroad Transportation. New York: D. Appleton, 1916.

Citazione MLA

Johnson, Emory R., e T. W. Van Metre. Principles of Railroad Transportation. D. Appleton, 1916.