APA

Perez A., Smith W., World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro B. & Smith W.Transcendent strategies, a new vision to managing the petroleum business. : .

Chicago

Perez A, Smith W, World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro Brasil) and Smith W.Transcendent strategies, a new vision to managing the petroleum business. : .

Harvard

Perez A., Smith W., World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro B. and Smith W.Transcendent strategies, a new vision to managing the petroleum business. : .

MLA

Perez A, Smith W, World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro Brasil) and Smith W.: . .