Hillenbrand, Robert. 'Anjar and Early Islamic Urbanism. Brogiolo, Gian Pietro; Perkins, Bryan Ward (编). The Idea and Ideal of the Town Between Late Antiquity

英國皇家盲人學院

2003 [2010-04-26]. （原始内容存档于2012-02-22）. D'Andrea, Frances Mary. Product Evaluation: More than a Perkins Brailler: A Review of the Mountbatten Brailler,

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美國勞工部

帕尔米拉

Hillenbrand, Robert. 'Anjar and Early Islamic Urbanism. Brogiolo, Gian Pietro; Perkins, Bryan Ward (编). The Idea and Ideal of the Town Between Late Antiquity

英國皇家盲人學院

2003 [2010-04-26]. （原始内容存档于2012-02-22）. D'Andrea, Frances Mary. Product Evaluation: More than a Perkins Brailler: A Review of the Mountbatten Brailler,