1. AAMI, 2009. ANSI/AAMI HE75, 2009/(R)2013. Human factors engineering—Design of medical devices, USA.
2. Principles of Research Design in the Social Sciences;Bechhofer,2012
3. Contextual Design Defining Custoner-Centered Systems;Beyer,1999
4. Crabtree, A., 1998. Ethnography in participatory design. Proceedings of the 1998 Participatory Design Conference, pp. 93–105.
5. Doing Design Ethnography;Crabtree,2012