APA (7th ed.) Citation

Gibb, H. R. (1986). National railway bulletin: Cumulative index, volumes 1-50, 1936-1985. National Railway Historical Society.

Chicago Style (17th ed.) Citation

Gibb, Hugh R. National Railway Bulletin: Cumulative Index, Volumes 1-50, 1936-1985. Philadelphia, Pa.: National Railway Historical Society, 1986.

MLA (9th ed.) Citation

Gibb, Hugh R. National Railway Bulletin: Cumulative Index, Volumes 1-50, 1936-1985. National Railway Historical Society, 1986.