National Center for Biotechnology Information, US National Library of Medicine, National Institutes of Health  Fleishman, Cooper (May 15, 2012).. 
(March 20, 1948) jẹ́ òṣèré ará Amẹ́ríkà.Àwọn ìtọ́kasíàwọn òṣèré fíú ará Amẹ́ríkà.. 