Abd El-Aziz, D., & El Kafrawy, M. (1990). Comparison between pumps which work by solar energy electricity, and diesel. Arab republic of Egypt. The institute of National Planning.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিAbd El-Aziz, Durria, এবং M. El Kafrawy. Comparison Between Pumps Which Work by Solar Energy Electricity, and Diesel. [Cairo]: Arab republic of Egypt. The institute of National Planning, 1990.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিAbd El-Aziz, Durria, এবং M. El Kafrawy. Comparison Between Pumps Which Work by Solar Energy Electricity, and Diesel. Arab republic of Egypt. The institute of National Planning, 1990.