Watson, G. E. (1965). Preliminary Smithsonian identification manual: Seabirds of the tropical Atlantic ocean. Smithsonian Instituttion.
Chicago Style (17th ed.) CitationWatson, George Elder. Preliminary Smithsonian Identification Manual: Seabirds of the Tropical Atlantic Ocean. Washington, D.C: Smithsonian Instituttion, 1965.
MLA (9th ed.) CitationWatson, George Elder. Preliminary Smithsonian Identification Manual: Seabirds of the Tropical Atlantic Ocean. Smithsonian Instituttion, 1965.
Warning: These citations may not always be 100% accurate.