Thomson, W. R. (1971). Checklist of Papal letters relating to the Orders of St. Francis: Innocent III-Alexander IV. Collegio S. Bonaventura.
Chicagoスタイル(17版)引用形式Thomson, Williell R. Checklist of Papal Letters Relating to the Orders of St. Francis: Innocent III-Alexander IV. Roma: Collegio S. Bonaventura, 1971.
MLA(8版)引用形式Thomson, Williell R. Checklist of Papal Letters Relating to the Orders of St. Francis: Innocent III-Alexander IV. Collegio S. Bonaventura, 1971.
警告: この引用は必ずしも正確ではありません.