Citazione APA

Pennsylvania Railroad. (1876). The Centennial Exhibition and the Pennsylvania Railroad. The Company.

Stile di citazione Chicago

Pennsylvania Railroad. The Centennial Exhibition and the Pennsylvania Railroad. Philadelphia: The Company, 1876.

Citazione MLA

Pennsylvania Railroad. The Centennial Exhibition and the Pennsylvania Railroad. The Company, 1876.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.