Hoffmann, R., & Brooks, A. (1927). Birds of the Pacific states: Containing brief biographies and descriptions of about four hundred species, with especial reference to their appearance in the field. Houghton Mifflin company.
Chicago Style (17th ed.) CitationHoffmann, Ralph, and Allan Brooks. Birds of the Pacific States: Containing Brief Biographies and Descriptions of About Four Hundred Species, with Especial Reference to Their Appearance in the Field. Boston, New York: Houghton Mifflin company, 1927.
MLA (9th ed.) CitationHoffmann, Ralph, and Allan Brooks. Birds of the Pacific States: Containing Brief Biographies and Descriptions of About Four Hundred Species, with Especial Reference to Their Appearance in the Field. Houghton Mifflin company, 1927.
Warning: These citations may not always be 100% accurate.