Beckmann, V., & Shrader, C. R. (2012). Active galactic nuclei. Wiley-VCH ; John Wiley [distributor].
芝加哥风格引文Beckmann, Volker, 与 Chris R. Shrader. Active Galactic Nuclei. Weinheim : Chichester: Wiley-VCH ; John Wiley [distributor], 2012.
MLA引文Beckmann, Volker, 与 Chris R. Shrader. Active Galactic Nuclei. Wiley-VCH ; John Wiley [distributor], 2012.
警告：这些引文格式不一定是100％准确.