1. Achard M. Letter to the General Residence of France in Morocco . Série Maroc-Tunisie (1917–1940) Sous-série Maroc , 826 . Ministère des Affaires Etrangères Français. Paris, 15 Nov. 1919 .
2. Three Gods, Two Shores, One Space: Religious Justifications for Tolerance and Confrontation between Spain and Colonial Morocco during the Franco Era