1. Abdalla, M. ., Suliman, S. E., & Bakhiet, A. O. (2009). Food safety knowledge and practices of street food vendors in Atbara city (Naher Elneel State Sudan). African Journal of Biotechnology, 8(24), 6997–6971.
2. Adekunle, J. (2007). Social custom and life style. In Culture and Customs of Rwanda (1st ed., pp. 115–132). Westport Conneticut, USA: Greenwood.
3. Adzitey, F., Teye, G. A., Kutah, W. N., & Adday, S. (2011). Microbial quality of beef sold on selected markets in the Tamale Metropolis in the Northern Region of Ghana. Livestock Research for Rural Development, 23(1), 1–6.
4. Bolton, D. J., Pearce, R. a., Sheridan, J. J., Blair, I. S., McDowell, D. a., & Harrington, D. (2002). Washing and chilling as critical control points in pork slaughter hazard analysis and critical control point (HACCP) systems. Journal of Applied Microbiology, 92(5), 893–902.
5. Borch, E., Nesbakken, T., & Christensen, H. (1996). Hazard identification in swine slaughter with respect to foodborne bacteria. International Journal of Food Microbiology, 30(1–2), 9–25.