Langohr, Herwig M. The rating agencies and their credit ratings : what they are, how they work and why they are relevant / Herwig M. Langohr and Patricia T. Langohr. - Hoboken, NJ : Wiley, 2008. - 510 p. : ill. - Wiley finance series . HKBU library YT2025 M10 ISBN: 9780470018002 Subjects--Topical Terms: Credit ratings.Credit bureaus. LC Class. No.: HG3751 / L269 R 2008