APA (7th ed.) Citation

Oil directory of foreign companies outside the U.S.A. and Canada. Midwest Oil Register.

Chicago Style (17th ed.) Citation

Oil Directory of Foreign Companies Outside the U.S.A. and Canada. Tulsa, Okla.: Midwest Oil Register.

MLA (9th ed.) Citation

Oil Directory of Foreign Companies Outside the U.S.A. and Canada. Midwest Oil Register.

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