^Petersen, Andrew (2012). The Medieval and Ottoman Hajj Route in Jordan: An Archaeological and Historical Study. Council for British Research in the Levant. ISBN1842175025.
^Morocco Baedeker Guide -Ingeborg Lehmann, Rita Henss – 2012 Page 214 "KASBAH A mud-brick castle that serves as a residence for the local Berber tribe is called a kasbah or »tighremt« in Morocco. Some are private mansions, others are even whole fortified villages with many large and small buildings crowded on ..."
^Amir 'Abd al-Rahman bin Ahmad al-Sudairi, The Desert Frontier of Arabia, Al-Jawf through the Ages, 1995, ISBN0-905743-75-X, p49
^Cetin, M. (2010). "Cultural versus material: conservation issues regarding earth architecture in Saudi Arabia: the case of an Ottoman fort, Ibrahim Palace in Al-Houfuf". International Journal of Civil & Environmental Engineering. 10 (4): 8–14.