APA (7th ed.) Citation

Hopkins, P. F., & Springel, V. (2006). The evolution in the faint-end slope of the quasar luminosity function. The astrophysical journal, 639(2), . https://doi.org/10.1086/499351

Chicago Style (17th ed.) Citation

Hopkins, Philip F., and Volker Springel. "The Evolution in the Faint-end Slope of the Quasar Luminosity Function." The Astrophysical Journal 639, no. 2 (2006). https://doi.org/10.1086/499351.

MLA (9th ed.) Citation

Hopkins, Philip F., and Volker Springel. "The Evolution in the Faint-end Slope of the Quasar Luminosity Function." The Astrophysical Journal, vol. 639, no. 2, 2006, https://doi.org/10.1086/499351.