Cita APA (7a ed.)

Osterbrock, D., & Miller, J. (1988). Active Galactic Nuclei. Kluwer Academic Publishers.

Cita Chicago Style (17a ed.)

Osterbrock, D.E, y J.S Miller. Active Galactic Nuclei. Dordrecht: Kluwer Academic Publishers, 1988.

Cita MLA (9a ed.)

Osterbrock, D.E, y J.S Miller. Active Galactic Nuclei. Kluwer Academic Publishers, 1988.