Weiss, Emilio; Strauss, Bernard S., The Life and Career of Howard Taylor Ricketts, Reviews of Infectious Diseases (The University of Chicago), 27 December 1990, 13 (6): 1241–2 [1991], PMID 1775858, doi:10.1093/clinids/13.6.1241
Weiss, Emilio; Strauss, Bernard S., The Life and Career of Howard Taylor Ricketts, Reviews of Infectious Diseases (The University of Chicago), 27 December 1990, 13 (6): 1241–2 [1991], PMID 1775858, doi:10.1093/clinids/13.6.1241