1. Subsurface palynostratigraphy of the Palaeozoic of Saudi Arabia, joint study between Saudi Aramco and CIMP, in stratigraphic palynology of the paleozoic of Saudi Arabia, Special Publication 1;Al-Hajri;GeoArabia,2000
2. Lexicon of the Paleozoic and Lower Mesozoic of Saudi Arabia;Al-Laboun,1993
3. Paleozoic to Early Mesozoic facies, depositional setting and hydrocarbon habitat in the Middle East: an overview and some play concepts;Alshahran;American Association Petroleum Geologists Bulletin,1986