1. Assessment of familiarity and understanding of chemical hazard warning signs among university students majoring chemistry and biology: a case study at Jimma University, Southwestern Ethiopia;Adane;World Applied Sciences Journal,2012
2. American National Standards Institute (ANSI), 1998. General Procedures for Evaluating Candidate Symbols. ANSI Z535.3-1998, Annex B: pp. 30.
3. Analysis of the level of comprehension of chemical hazard labels: a case for Zambia;Banda;Science of the Total Environment,2006
4. Isocyanates in South Africa: usage, hazards and health and safety information;Dalvie;South African Journal of Science,1999
5. South African Department of Labour (DL), 1995. Hazardous Chemical Substances Regulations. Government Notice R1179. DL, Pretoria.