(2000). Morocco since 1830: A History. London: Hurst. p. 634. ISBN 978-1850652731. Woolman 1968, p. 91. Albi, Julio (2011). El Alcantara 1921. La Caballeria...
(2000). Morocco since 1830 : a history. London: Hurst & Co. p. 233. ISBN 978-1850652731. OCLC 42954024.{{cite book}}: CS1 maint: multiple names: authors list...
Pennell, C. R. (2000) Morocco since 1830: A History, Hurst: London. ISBN 9781850652731. Tamburini, F. (Sep 2005) "I gas nella guerra del Rif", Storia Militare...