APA (7th ed.) Citation

Kingery, H. E., & Ghalambor, C. K. (2001). Pygmy nuthatch: Sitta pygmaea. Birds of North America, Inc..

Chicago Style (17th ed.) Citation

Kingery, Hugh E., and Cameron K. Ghalambor. Pygmy Nuthatch: Sitta Pygmaea. Philadelphia, Pa.: Birds of North America, Inc., 2001.

MLA (9th ed.) Citation

Kingery, Hugh E., and Cameron K. Ghalambor. Pygmy Nuthatch: Sitta Pygmaea. Birds of North America, Inc., 2001.