APA

Fichter D., World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary A. C., .Data mining as applied to project and portfolio analysis in the oil and gas industry. : .

Chicago

Fichter Dan, World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary Alberta Canada), .Data mining as applied to project and portfolio analysis in the oil and gas industry. : .

Harvard

Fichter D., World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary A. C., .Data mining as applied to project and portfolio analysis in the oil and gas industry. : .

MLA

Fichter Dan, World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary Alberta Canada), .: . .