APA

Beckervordersandforth C., World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro B., .Methane leakage reduction/technological solutions. : .

Chicago

Beckervordersandforth Christian, World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro Brasil), .Methane leakage reduction/technological solutions. : .

Harvard

Beckervordersandforth C., World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro B., .Methane leakage reduction/technological solutions. : .

MLA

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