APA

Morrison D., International Gas Union I. & World Gas Conference (23rd. : 2006 jun 5-9 : Amsterdam T. N.Capital gas for sufficient and transparant. : .

Chicago

Morrison David, International Gas Union IGU and World Gas Conference (23rd. : 2006 jun 5-9 : Amsterdam The Netherlands).Capital gas for sufficient and transparant. : .

Harvard

Morrison D., International Gas Union I. and World Gas Conference (23rd. : 2006 jun 5-9 : Amsterdam T. N.Capital gas for sufficient and transparant. : .

MLA

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