Cita APA (7th ed.)
(1985). Astrophysics of active galaxies and quasi-stellar objects. University Science Books.
Cita Chicago (17th ed.)
Astrophysics of Active Galaxies and Quasi-stellar Objects. Mill Valley, CA: University Science Books, 1985.
Cita MLA (9th ed.)
Astrophysics of Active Galaxies and Quasi-stellar Objects. University Science Books, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.