SpringerLink (Online service), Alloin, D., Johnson, R., & Lira, P. (2006). Physics of active galactic nuclei at all scales. Springer.
Chicago Style aipamenaSpringerLink (Online service), Danielle Alloin, Rachel Johnson, and Paulina Lira. Physics of Active Galactic Nuclei at All Scales. Berlin, Heidelberg: Springer, 2006.
MLA aipamenaSpringerLink (Online service), et al. Physics of Active Galactic Nuclei at All Scales. Springer, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.