Swain, R. B. (1948). Insect guide: Orders and major families of north American insects.
Chicago Edition CitationSwain, Ralph B. Insect Guide: Orders and Major Families of North American Insects. 1948.
MLA Edition CitationSwain, Ralph B. Insect Guide: Orders and Major Families of North American Insects. 1948.
Warning: These citations may not always be 100% accurate.