Wiley, R. Haven and David S. Lee. 1999. Parasitic Jaeger (Stercorarius parasiticus). In The Birds of North America, No. 445 (A. Poole and F. Gill, eds.). The Academy of Natural Sciences, Philadelphia, PA, and the American Ornithologists’ Union, Washington, DC.
Cramps, Stanley, ed. 1983. Handbook of the Birds of Europe, the Middle East and North Africa: the Birds of the Western Palearctic. Volume III. Oxford University Press.