Quelques ouvrages sur le sujet:

Active Galactic Nuclei, Volker Beckmann, Chris Schrader, Wiley-VCH
Active Galactic Nuclei, J. H. Krolik, Princeton Series in Astrophysics
Les noyaux actifs de galaxies, M. Camenzind, Springer
The Nature of Compact Objects in Active Galactic Nuclei, Edited by A. Robinson and R. J. Terlevich, Cambridge University Press