Twilight observation by the naked eye of the dawn sincere at Hail and other areas in Saudi Arabia
Khalifa, N., Hassan, A., Taha, A. (2018). Twilight observation by the naked eye of the dawn sincere at Hail and other areas in Saudi Arabia. EKB Journal Management System, 7(1), 22-26. doi: 10.1016/j.nrjag.2018.01.001
N.S. Khalifa; A.H. Hassan; A.I. Taha. "Twilight observation by the naked eye of the dawn sincere at Hail and other areas in Saudi Arabia". EKB Journal Management System, 7, 1, 2018, 22-26. doi: 10.1016/j.nrjag.2018.01.001
Khalifa, N., Hassan, A., Taha, A. (2018). 'Twilight observation by the naked eye of the dawn sincere at Hail and other areas in Saudi Arabia', EKB Journal Management System, 7(1), pp. 22-26. doi: 10.1016/j.nrjag.2018.01.001
Khalifa, N., Hassan, A., Taha, A. Twilight observation by the naked eye of the dawn sincere at Hail and other areas in Saudi Arabia. EKB Journal Management System, 2018; 7(1): 22-26. doi: 10.1016/j.nrjag.2018.01.001