Saudi Arabia) Nadwah al-Jughrāfīyah li-Aqsām al-Jughrāfiyā bi-al-Mamlakah al-ʻArabīyah al-Saʻūdīyah (4th 1991 Mecca

• al-Kitāb al-ʻilmī lil-Nadwah al-Jughrāfīyah al-Rābiʻah li-Aqsām al-Jughrāfīyā bi-al-Mamlakah al-ʻArabīyah al-Saʻūdīyah, 18-20 Jumādá al-Ākhirah, 1412 H/24-26 Dīsimbir 1991 M.