The code of nomenclature and check-list of North American birds adopted by the American ornithologists' union :
being the report of the committee of the union on classification and nomenclature ...

APA Citation

American Ornithologists' Union. (1886). The code of nomenclature and check-list of North American birds adopted by the American ornithologists' union: being the report of the committee of the union on classification and nomenclature ... New York: American ornithologists' union.

MLA Citation

American Ornithologists' Union. The Code of Nomenclature And Check-list of North American Birds Adopted by the American Ornithologists' Union: Being the Report of the Committee of the Union On Classification And Nomenclature ... New York: American ornithologists' union, 1886.