APA

Veen E. v., Shell, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston) & Shell.Hydrocarbon emissions in the oil industry and mesures for control. : .

Chicago

Veen Ernst van, Shell, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston) and Shell.Hydrocarbon emissions in the oil industry and mesures for control. : .

Harvard

Veen E. v., Shell, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston) and Shell.Hydrocarbon emissions in the oil industry and mesures for control. : .

MLA

Veen Ernst van, Shell, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston) and Shell.: . .