(2009). Gazprom. Financial report 2008. Москва, Gazprom, 2009.
Cita Chicago (17th ed.)Gazprom. Financial Report 2008. Москва, Gazprom, 2009, 2009.
Cita MLA (9th ed.)Gazprom. Financial Report 2008. Москва, Gazprom, 2009, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.