1. Warning symbology: difficult concepts may be successfully depicted with two-part signs;Adams;Inform. Des. J.,2010
2. ANSI Z535.3:2011. Criteria for safety symbols. National Electrical Manufacturers Association, Washington, DC.
3. ANSI/ASABE AD11684:1995, Apr2011. 2011. Tractors, machinery for agricultural and forestry, powered lawn and garden equipment – Safety signs and hazard pictorials – general principles. American Society of Agricultural and Biological Engineers, St. Joseph, MI.
4. The use of pictograms in the health care: a literature review;Barros;Res. Soc. Adm. Pharm.,2014
5. Comprehension of hazard communication: effects of pictograms on safety data sheets and labels;Boelhouwer;J. Saf. Res.,2013