Citazione Stile APA (7a Edizione)

Ball, D. (1986). The Pennsylvania Railroad, 1940s-1950s. Elm Tree Books ; Distributed by W.W. Norton.

Citazione stile Chigago Style (17a edizione)

Ball, Don. The Pennsylvania Railroad, 1940s-1950s. Chester, Vt. : New York, N.Y.: Elm Tree Books ; Distributed by W.W. Norton, 1986.

Citatione MLA (8a ed.)

Ball, Don. The Pennsylvania Railroad, 1940s-1950s. Elm Tree Books ; Distributed by W.W. Norton, 1986.