1. Is geographical location a barrier for echo training? An observational account of 10 student cardiac sonographers' pursuit to achieve accreditation;Williamson;Sonography,2016
2. Skills for Care Providing Effective Supervision http://www.skillsforcare.org.uk/Document-library/Finding-and-keeping-workers/Supervision/Providing-Effective-Supervision.pdf
3. The Royal College of Radiologists Standards for the Provision of an Ultrasound Service London The College 2014
4. Australasian Sonographers Association ASA Guideline: A Sonographer's Guide to Clinical Supervision. Dingley: The Association 2015 http://www.sonographers.org/public/12/files/Guidelines/Clinical_Supervision_ASA-Guidline_Nov15.pdf
5. NHS Education for Scotland A Guide to Healthcare Support Worker Education and Role Development. Edinburgh: NHS Education for Scotland 2008 http://nes.scot.nhs.uk/education-and-training/by-discipline/allied-health-professions/resources,-publications-and-useful-links/publications/a-guide-to-healthcare-support-worker-education-and-role-development.aspx