APA (7th ed.) Citation

Smithsonian Institution. (1942). New species of bark beetles (Pityophthorini) from Mexico and tropical America (Coleoptera, Scolytidae). [s.n.].

Chicago Style (17th ed.) Citation

Smithsonian Institution. New Species of Bark Beetles (Pityophthorini) from Mexico and Tropical America (Coleoptera, Scolytidae). [Washington]: [s.n.], 1942.

MLA (9th ed.) Citation

Smithsonian Institution. New Species of Bark Beetles (Pityophthorini) from Mexico and Tropical America (Coleoptera, Scolytidae). [s.n.], 1942.

Warning: These citations may not always be 100% accurate.