Não informado. (2009). Gas International. Institution of Gas Engineers and Managers.
Style de citation Chicago (17e éd.)Não informado. Gas International. Loughborough, Inglaterra: Institution of Gas Engineers and Managers, 2009.
Style de citation MLA (8e éd.)Não informado. Gas International. Institution of Gas Engineers and Managers, 2009.
Attention : ces citations peuvent ne pas être correctes à 100%.