Ahlers, R., & Krämer, P. (1992). Firmung. Ecclesia a sacramentis, 37-52.
芝加哥风格引文Ahlers, Reinhild, 与 Peter Krämer. "Firmung." Ecclesia a Sacramentis 1992: 37-52.
MLA引文Ahlers, Reinhild, 与 Peter Krämer. "Firmung." Ecclesia a Sacramentis, 1992, pp. 37-52.
警告：这些引文格式不一定是100％准确.