Köhn. (2012). Greening the Financial Sector (1.). Springer Berlin Heidelberg.
Cita Chicago (17th ed.)Köhn. Greening the Financial Sector. 1. Springer Berlin Heidelberg, 2012.
Cita MLA (8th ed.)Köhn. Greening the Financial Sector. 1. Springer Berlin Heidelberg, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.