APA

Ahmed M., World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro B., .Identifying value creation channels through e-business implementation in the oil industry. : .

Chicago

Ahmed Mazighi, World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro Brasil), .Identifying value creation channels through e-business implementation in the oil industry. : .

Harvard

Ahmed M., World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro B., .Identifying value creation channels through e-business implementation in the oil industry. : .

MLA

Ahmed Mazighi, World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro Brasil), .: . .