Roberts, T. S. (1934). Bird portraints in color two hundred ninety-five north american species. The University of Minnesota.
Chicago Style (17th ed.) CitationRoberts, Thomas S. Bird Portraints in Color Two Hundred Ninety-five North American Species. Minneapolis: The University of Minnesota, 1934.
MLA (9th ed.) CitationRoberts, Thomas S. Bird Portraints in Color Two Hundred Ninety-five North American Species. The University of Minnesota, 1934.
Warning: These citations may not always be 100% accurate.