1. The System of Professions – a Study of the Division of Expert Labour;Abbott,1988
2. Narrating nursing jurisdiction: ‘atrocity stories’ and ‘boundary work’;Allen;Symb. Interact.,2001
3. American Academy of Physician Assistants, State Laws and Regulations 2016. (Accessed 13 May 2016) at: https://www.aapa.org/career/state-licensing-requirements/.
4. Physician Assistants: opportunity or duplication?;Anon;Indep. Nurse,2005
5. NHS Plans Rapid Expansion of 'doctor's Assistant' Jobs;BBC News,2014