Παραπομπή σε μορφή APA (7η εκδ.)

Bureau of Railway Economics (Washington, D.C.), & Association of American Railroads. Bureau of Railway Economics. (1920). Railway revenues and expenses. The Bureau.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Bureau of Railway Economics (Washington, D.C.), και Association of American Railroads. Bureau of Railway Economics. Railway Revenues and Expenses. Washington, D.C.: The Bureau, 1920.

Παραπομπή σε μορφή MLA (8th εκδ.)

Bureau of Railway Economics (Washington, D.C.), και Association of American Railroads. Bureau of Railway Economics. Railway Revenues and Expenses. The Bureau, 1920.