Friesner, D., P. Cashel-Cordo, and M. Q. McPherson. “Determinants of Demand for HIV Testing: Evidence from California Outpatients Clinics”. Californian Journal of Health Promotion, Vol. 5, no. 4, Dec. 2007, pp. 52-75, doi:10.32398/cjhp.v5i4.1268.