APA

International Gas Union I., Gas Technology Institute, Sustainable Urban Systems Design International Competition, World Gas Conference (22nd. : 2003 jun 1-5 : Tokyo), International Gas Union I., Gas Technology Institute & World Gas Conference (22nd. : 2003 jun 1-5 : Tokyo).USA (United States). : .

Chicago

International Gas Union IGU, Gas Technology Institute, Sustainable Urban Systems Design International Competition, World Gas Conference (22nd. : 2003 jun 1-5 : Tokyo), International Gas Union IGU, Gas Technology Institute and World Gas Conference (22nd. : 2003 jun 1-5 : Tokyo).USA (United States). : .

Harvard

International Gas Union I., Gas Technology Institute, Sustainable Urban Systems Design International Competition, World Gas Conference (22nd. : 2003 jun 1-5 : Tokyo), International Gas Union I., Gas Technology Institute and World Gas Conference (22nd. : 2003 jun 1-5 : Tokyo).USA (United States). : .

MLA

International Gas Union IGU, Gas Technology Institute, Sustainable Urban Systems Design International Competition, World Gas Conference (22nd. : 2003 jun 1-5 : Tokyo), International Gas Union IGU, Gas Technology Institute and World Gas Conference (22nd. : 2003 jun 1-5 : Tokyo).: . .