APA

Foehn J., World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro B., .Challenges and rewards of B2B in an integrated oil & gas and chemical company. : .

Chicago

Foehn Jean-Pierre, World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro Brasil), .Challenges and rewards of B2B in an integrated oil & gas and chemical company. : .

Harvard

Foehn J., World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro B., .Challenges and rewards of B2B in an integrated oil & gas and chemical company. : .

MLA

Foehn Jean-Pierre, World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro Brasil), .: . .