APA (7th ed.) Citation

Peterson, B. M. (1997). An introduction to active galactic nuclei. Cambridge University Press. https://doi.org/10.1017/CBO9781139170901

Chicago Style (17th ed.) Citation

Peterson, B. M. An Introduction to Active Galactic Nuclei. Cambridge: Cambridge University Press, 1997. https://doi.org/10.1017/CBO9781139170901.

MLA (9th ed.) Citation

Peterson, B. M. An Introduction to Active Galactic Nuclei. Cambridge University Press, 1997. https://doi.org/10.1017/CBO9781139170901.