Hammadi، T. H. H.، و Brotheton، I. (1993). Outdoor Recreation and Leisure Patterns in Saudi Arabia and Their Roles in Determining Open Space Planning and Design: The Case of Jeddahs Corniche (رسالة دكتوراه غير منشورة). University of Sheffield، شفيلد. مسترجع من http://search.mandumah.com/Record/612259
Hammadi، Talal Hassan Hammadi، و Ian Brotheton. "Outdoor Recreation and Leisure Patterns in Saudi Arabia and Their Roles in Determining Open Space Planning and Design: The Case of Jeddahs Corniche" رسالة دكتوراه. University of Sheffield، شفيلد، 1993. مسترجع من http://search.mandumah.com/Record/612259