1. Rate of referral from primary health care to secondary health care among governmental hospitals in Taif governorate KSA;Al-Ghamdi;IJMSPH,2015
2. Dropping the baton:Specialty referrals in the United States;Mehrotra;Milbank Q,2011
3. Patterns of referring patients by general practitioners to specialist consultation –An international comparison;Katić;Lijec Vjesn,1994
4. Tools to improve referrals from primary care to specialty care;Vimalananda;Am J Manag Care,2019
5. Referral patterns by family physicians affect numerous aspects of medical care;Porter;AJMC,2018