Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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