APA (7th ed.) Citation

Cevallos G., M. A. (1949). The toxicity of organic insecticides to grasshoppers. [publisher not identified].

Chicago Style (17th ed.) Citation

Cevallos G., Miguel A. The Toxicity of Organic Insecticides to Grasshoppers. [College Station, Tex.]: [publisher not identified], 1949.

MLA (9th ed.) Citation

Cevallos G., Miguel A. The Toxicity of Organic Insecticides to Grasshoppers. [publisher not identified], 1949.