APA

Blackwelder R. E., . (1944). Checklist of the coleopterous insects of Mexico, Central America, the West Indies, and South America. [Washington, D.C: Smithsonian Institution Press.

Chicago

Blackwelder Richard E, . 1944. Checklist of the coleopterous insects of Mexico, Central America, the West Indies, and South America. [Washington, D.C: Smithsonian Institution Press.

Harvard

Blackwelder R. E., . (1944). Checklist of the coleopterous insects of Mexico, Central America, the West Indies, and South America. [Washington, D.C: Smithsonian Institution Press.

MLA

Blackwelder Richard E, . Checklist of the coleopterous insects of Mexico, Central America, the West Indies, and South America. [Washington, D.C: Smithsonian Institution Press. 1944.