Mıllıron, H. E., & editor: Pielou, D. P. (1973). A Monograph of the Western Hemisphere Bumblebees (hymenoptera: apidae: bombinae): II. The genus megabombus subgenus megabombus. Ottowa: The Entomological Society of Canada.
Chicago Style CitationMıllıron, H. E., and D. P. editor: Pielou. A Monograph of the Western Hemisphere Bumblebees (hymenoptera: Apidae: Bombinae): II. The Genus Megabombus Subgenus Megabombus. Ottowa: The Entomological Society of Canada, 1973.
MLA CitationMıllıron, H. E., and D. P. editor: Pielou. A Monograph of the Western Hemisphere Bumblebees (hymenoptera: Apidae: Bombinae): II. The Genus Megabombus Subgenus Megabombus. Ottowa: The Entomological Society of Canada, 1973.
Warning: These citations may not always be 100% accurate.