APA (7th ed.) Citation

Terrell, H. (2010). World of oil & gas. World Oil, 231(12), 9.

Chicago Style (17th ed.) Citation

Terrell, Henry. "World of Oil & Gas." World Oil 231, no. 12 (2010): 9.

MLA (9th ed.) Citation

Terrell, Henry. "World of Oil & Gas." World Oil, vol. 231, no. 12, 2010, p. 9.

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