1. Stratigraphy and hydrocarbon potential of the Palaeozoic succession in both Tabuk and Widyan Basins, Arabia;Al-Laboun,1986
2. Palaeozoic lithostratigraphy in the subsurface of Jordan;Andrews,1991
3. Stratigraphie der “Nubischen Sandsteine” in sud-Jordanien;Bender;Geol. Jahrb.,1963
4. Geological Map of Jordan;Bender,1968