APA (7th ed.) Citation

Upton, H. (1993). Define your company's position. National Petroleum News, 85(13), 11.

Chicago Style (17th ed.) Citation

Upton, Howard. "Define Your Company's Position." National Petroleum News 85, no. 13 (1993): 11.

MLA (9th ed.) Citation

Upton, Howard. "Define Your Company's Position." National Petroleum News, vol. 85, no. 13, 1993, p. 11.