Papp, C. S. (1979). An illustrated catalog of the Cryptorhynchinae of the New World: With generic descriptions, references to the literature and deposition of type material (Coleoptera, Curculionidae). State of California, Dept. of Food and Agriculture, Division of Plant Industry, Laboratory Services - Entomology.
Chicago Style (17th ed.) CitationPapp, Charles S. An Illustrated Catalog of the Cryptorhynchinae of the New World: With Generic Descriptions, References to the Literature and Deposition of Type Material (Coleoptera, Curculionidae). [Place of publication not identified]: State of California, Dept. of Food and Agriculture, Division of Plant Industry, Laboratory Services - Entomology, 1979.
MLA (9th ed.) CitationPapp, Charles S. An Illustrated Catalog of the Cryptorhynchinae of the New World: With Generic Descriptions, References to the Literature and Deposition of Type Material (Coleoptera, Curculionidae). State of California, Dept. of Food and Agriculture, Division of Plant Industry, Laboratory Services - Entomology, 1979.