APA (7th ed.) Citation

Watkins, J. E. (1888). Contributions of department of transportation and engineering to Ohio Valley Centennial Exhibition,1888. [publisher not identified.

Chicago Style (17th ed.) Citation

Watkins, J. Elfreth. Contributions of Department of Transportation and Engineering to Ohio Valley Centennial Exhibition,1888. Washington, D.C.: [publisher not identified, 1888.

MLA (9th ed.) Citation

Watkins, J. Elfreth. Contributions of Department of Transportation and Engineering to Ohio Valley Centennial Exhibition,1888. [publisher not identified, 1888.