Heinrich, v. G., & Hödl, L. (1998). Summa: (quaestiones ordinariae); art. XLI - XLVI. Opera omnia..
芝加哥风格引文Heinrich, von Gent, 与 Ludwig Hödl. "Summa: (quaestiones Ordinariae); Art. XLI - XLVI." Opera Omnia. 1998.
MLA引文Heinrich, von Gent, 与 Ludwig Hödl. "Summa: (quaestiones Ordinariae); Art. XLI - XLVI." Opera Omnia., 1998.
警告：这些引文格式不一定是100％准确.