Goyal RK, Williams DH, Sansgiry SS, Essien J. Awareness and perceived usefulness of the website designed to facilitate informed health insurance purchase decisions. TPHJ. 2010 Jul;62(3):8-11.
Williams VSL, Wakeford ME. The predictive validity of the National Teacher Examinations for performance in teacher education programs. Educ Psychol Meas. 1993;53(2):533-9. doi: 10.1177/0013164493053002023