APA

Alvarez E., International Gas Union I. & World Gas Conference (23rd. : 2006 jun 5-9 : Amsterdam T. N.Gas to power europe and russian federation. : .

Chicago

Alvarez Eloy, International Gas Union IGU and World Gas Conference (23rd. : 2006 jun 5-9 : Amsterdam The Netherlands).Gas to power europe and russian federation. : .

Harvard

Alvarez E., International Gas Union I. and World Gas Conference (23rd. : 2006 jun 5-9 : Amsterdam T. N.Gas to power europe and russian federation. : .

MLA

Alvarez Eloy, International Gas Union IGU and World Gas Conference (23rd. : 2006 jun 5-9 : Amsterdam The Netherlands).: . .