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–         Dirar, H.A. 1993. The indigenous fermented foods of the Sudan, C.A.B international, Wallingford, UK. 552 pp.

–         Dirar, H.A.(editor) 1997. Food processing technologies for Africa. United Nations Industrial development organization (UNIDO), Vienna, 196 pp.

–         Dirar, H.A. (member of study team). 2003. Assessment of national capacity building needs related to managing access to genetic resources and benefit sharing, higher council for environment and natural resources (HCENR), Sudan. 53 pp.

–         Dirar, H.A. (Co-editor) promoting Arab cooperation in research in the area of biotechnology in improving plant production, Arab organization for agricultural development, Khartoum, Sudan. (Arabic). 2001.

–         Dirar, H.A. 2004. The amulet of Feki Umhummad Wad Beshir. Memoirs of a Sudanese nomad boy who went to school, 505 pp.

–         Dirar, H.A. 2012. Biotechnology and society. Khartoum University press. Khartoum, Sudan, popular science. (Arabic), 405 pp.

–         Dirar, H.A. 2013. Biology of microorganisms. Khartoum University press. Khartoum, Sudan, popular science. (Arabic), 567 pp.

–         Dirar, H.A. 2013. Miroorganisms and foods ( Food Microbiology). Khartoum University press. Khartoum, Sudan, popular science. (Arabic), 421 pp.