1. The Occurrence of Upper Permian Foraminifers in Northwest Pahang;Abdullah,1993
2. Discovery of Upper Permian Carbonates from the Kenong Wildlife Reserve;Abdullah,1995
3. Stratigraphy of the Jentik Formation, the transitional sequence from the Setul Limestone to the Kubang Pasu Formation at Guar Sanai, Kampung Guar Jentik, Beseri;Amir Hassan;Perlis-a preliminary study. Warta Geologi (Newsletter of the Geological Society of Malaysia),2002
4. The Devonian–Lower Carboniferous succession in Northwest Peninsular Malaysia;Amir Hassan;J. Asian Earth Sci.,2005
5. Early Devonian graptolites and tentaculitids in northwest Peninsular Malaysia and a revision of the Devonian - Carboniferous stratigraphy of the region;Amir Hassan;Alcheringa: Australas. J. Palaeontol.,2013