APA (7th ed.) Citation

Frankel, P. H. (1946). Essentials of petroleum: A key to oil economics. Chapman & Hall.

Chicago Style (17th ed.) Citation

Frankel, P. H. Essentials of Petroleum: A Key to Oil Economics. London: Chapman & Hall, 1946.

MLA (9th ed.) Citation

Frankel, P. H. Essentials of Petroleum: A Key to Oil Economics. Chapman & Hall, 1946.

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