APA (7th ed.) Citation

Towles, J. K. (1923). Petroleum trade and industry of United Kingdom. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Towles, John Ker. Petroleum Trade and Industry of United Kingdom. [Washington?]: U.S. Government Printing Office, 1923.

MLA (9th ed.) Citation

Towles, John Ker. Petroleum Trade and Industry of United Kingdom. U.S. Government Printing Office, 1923.