APA (7th ed.) Citation

Courvoisier, T. J. (1990). Active galactic nuclei. Springer.

Chicago Style (17th ed.) Citation

Courvoisier, Thierry J.-L. Active Galactic Nuclei. Berlin <<[u.a.]>>: Springer, 1990.

MLA (9th ed.) Citation

Courvoisier, Thierry J.-L. Active Galactic Nuclei. Springer, 1990.