APA (7th ed.) Citation

(1939). Papers on Philippine diatoms, annelids, hydroids, echinoids, and mollusks. U. S. Govt. print. off.

Chicago Style (17th ed.) Citation

Papers on Philippine Diatoms, Annelids, Hydroids, Echinoids, and Mollusks. Washington, D.C: U. S. Govt. print. off, 1939.

MLA (9th ed.) Citation

Papers on Philippine Diatoms, Annelids, Hydroids, Echinoids, and Mollusks. U. S. Govt. print. off, 1939.