1. Wayfinding: People, Sign, and Architecture;Arthur,1992
2. Public information symbols: a comparison of ISO testing procedures;Brugger,1999
3. Design that Cares: Planning Health Facilities for Patients and Visitors;Carpman,1993
4. Symbol Usage in Healthcare Setting for People with Limited English Proficiency;Cowgill,2003
5. International assessment of judged symbol comprehensibility;Foster;Int. J. Psychol.,2005