Naugler, C. T. (1993). American tree sparrow: Spizella arborea. American Ornithologists' Union ; The Academy of Natural Sciences.
Chicago Style (17th ed.) CitationNaugler, Christopher T. American Tree Sparrow: Spizella Arborea. Washington, D.C. : Philadelphia, PA: American Ornithologists' Union ; The Academy of Natural Sciences, 1993.
MLA (9th ed.) CitationNaugler, Christopher T. American Tree Sparrow: Spizella Arborea. American Ornithologists' Union ; The Academy of Natural Sciences, 1993.
Warning: These citations may not always be 100% accurate.