His Studying a study and testing a test, c1981: t.p. (Richard K. Riegelman, M.D., M.P.H., asst. prof., Dept. of Health Care Sciences and Dept. of Med., George Washington Univ. Med. Cent., Wash., D.C., attend. phys., George Wash. Univ. Hosp., Wash., D.C.)

Biblioteca del congreso (Estados Unidos), 22 febrero de 2018: catálogo electrónico https://goo.gl/GxWe6x