Robbins. Birds of Maryland, Delaware, and the District of Columbia. Johns Hopkins University Press.
Chicago Style (17th ed.) CitationRobbins. Birds of Maryland, Delaware, and the District of Columbia. Johns Hopkins University Press.
MLA (8th ed.) CitationRobbins. Birds of Maryland, Delaware, and the District of Columbia. Johns Hopkins University Press.
Warning: These citations may not always be 100% accurate.