APA

Eichsteller H., World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro B., .Revenue increase and improvements in cost efficiency using web-based communication. : .

Chicago

Eichsteller Harald, World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro Brasil), .Revenue increase and improvements in cost efficiency using web-based communication. : .

Harvard

Eichsteller H., World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro B., .Revenue increase and improvements in cost efficiency using web-based communication. : .

MLA

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