Erwin, T. L., & Medina, R. F. (2003). The Neotropical species Askalaphium depressum (Bates): Larval description, first diagnosis and illustrations of immature Ctenodactylini, with natural history notes on the genus and tribe (Coleoptera:Carabidae). Magnolia Press.
Chicago Style (17th ed.) CitationErwin, Terry L., and Raul F. Medina. The Neotropical Species Askalaphium Depressum (Bates): Larval Description, First Diagnosis and Illustrations of Immature Ctenodactylini, with Natural History Notes on the Genus and Tribe (Coleoptera:Carabidae). Auckland, N.Z.: Magnolia Press, 2003.
MLA (9th ed.) CitationErwin, Terry L., and Raul F. Medina. The Neotropical Species Askalaphium Depressum (Bates): Larval Description, First Diagnosis and Illustrations of Immature Ctenodactylini, with Natural History Notes on the Genus and Tribe (Coleoptera:Carabidae). Magnolia Press, 2003.