London, B. (1990). Umbrella guide to the Inland Empire. Umbrella Books.
Cita Chicago Style (17a ed.)London, Bill. Umbrella Guide to the Inland Empire. Friday Harbor, WA: Umbrella Books, 1990.
Cita MLA (8a ed.)London, Bill. Umbrella Guide to the Inland Empire. Umbrella Books, 1990.
Precaución: Estas citas no son 100% exactas.