APA (7th ed.) Citation

Colombano, A., & Colombano, A. (2015). Oil & gas company analysis: Upstream, midstream & downstream. Self-published by Alfonso Colombano.

Chicago Style (17th ed.) Citation

Colombano, Alfonso, and Alberto Colombano. Oil & Gas Company Analysis: Upstream, Midstream & Downstream. [United States]: Self-published by Alfonso Colombano, 2015.

MLA (9th ed.) Citation

Colombano, Alfonso, and Alberto Colombano. Oil & Gas Company Analysis: Upstream, Midstream & Downstream. Self-published by Alfonso Colombano, 2015.