APA (7th ed.) Citation

Dobkin, W. W. (1924). Petroleum industry and trade of Peru and Ecuador. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Dobkin, William Walter. Petroleum Industry and Trade of Peru and Ecuador. [Washington?]: U.S. Government Printing Office, 1924.

MLA (9th ed.) Citation

Dobkin, William Walter. Petroleum Industry and Trade of Peru and Ecuador. U.S. Government Printing Office, 1924.