APA

Benhamadi A., World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro B., .The business trading of LNG in the 21st century. : .

Chicago

Benhamadi Abdelaziz, World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro Brasil), .The business trading of LNG in the 21st century. : .

Harvard

Benhamadi A., World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro B., .The business trading of LNG in the 21st century. : .

MLA

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