APA (7th ed.) Citation

Sweet, W. B. (1973). Eureka, Humboldt County, California. De[lt]a Publishing Company.

Chicago Style (17th ed.) Citation

Sweet, Walter B. Eureka, Humboldt County, California. Eureka, Calif.: De[lt]a Publishing Company, 1973.

MLA (9th ed.) Citation

Sweet, Walter B. Eureka, Humboldt County, California. De[lt]a Publishing Company, 1973.