APA (7th ed.) Citation

Thomas, E. L. (1931). Latin American markets for soaps and soap ingredients. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Thomas, E. L. Latin American Markets for Soaps and Soap Ingredients. [Washington?]: U.S. Government Printing Office, 1931.

MLA (9th ed.) Citation

Thomas, E. L. Latin American Markets for Soaps and Soap Ingredients. U.S. Government Printing Office, 1931.