Barber, M. (1998). The Cathars and the Albigensian Crusade. By Michael Costen. Manchester: Manchester University Press, 1997. x + 229 pp. 19.95 paper. Church history, 67(4), 772. doi:10.2307/3169871
芝加哥风格引文Barber, Malcolm. "The Cathars and the Albigensian Crusade. By Michael Costen. Manchester: Manchester University Press, 1997. X + 229 Pp. 19.95 Paper." Church History 67, no. 4 (1998): 772, https://doi.org/10.2307/3169871.
MLA引文Barber, Malcolm. "The Cathars and the Albigensian Crusade. By Michael Costen. Manchester: Manchester University Press, 1997. X + 229 Pp. 19.95 Paper." Church History, vol. 67, no. 4, 1998, p. 772, https://doi.org/10.2307/3169871.
警告：这些引文格式不一定是100％准确.