APA (7th ed.) Citation

Swett, I. L., & Aitken, H. C. (1975). The Napa Valley route: Electric trains & steamers. Interurbans.

Chicago Style (17th ed.) Citation

Swett, Ira L., and Harry C. Aitken. The Napa Valley Route: Electric Trains & Steamers. Glendale, Calif.: Interurbans, 1975.

MLA (9th ed.) Citation

Swett, Ira L., and Harry C. Aitken. The Napa Valley Route: Electric Trains & Steamers. Interurbans, 1975.