^Sarah A. Tishkoff, Floyd A. Reed, Françoise R. Friedlaender, Christopher Ehret, Alessia Ranciaro, Alain Froment, Jibril B. Hirbo, Agnes A. Awomoyi, Jean-Marie Bodo, Ogobara Doumbo, Muntaser Ibrahim, Abdalla T. Juma, Maritha J. Kotze, Godfrey Lema, Jason H. Moore, Holly Mortensen, Thomas B. Nyambo, Sabah A. Omar, Kweli Powell, Gideon S. Pretorius, Michael W. Smith, Mahamadou A. Thera, Charles Wambebe, James L. Weber, Scott M. Williams. The Genetic Structure and History of Africans and African Americans. Science. 2009-05-22, 324 (5930): 1035–1044 [2018-04-02]. ISSN 0036-8075. doi:10.1126/science.1172257. (原始內容存檔於2021-03-12) (英語).
Tishkoff, Sarah A.; Floyd A. Reed, Françoise R. Friedlaender, Christopher Ehret, Alessia Ranciaro, Alain Froment, Jibril B. Hirbo, Agnes A. Awomoyi, Jean-Marie Bodo, Ogobara Doumbo, Muntaser Ibrahim, Abdalla T. Juma, Maritha J. Kotze, Godfrey Lema, Jason H. Moore, Holly Mortensen, Thomas B. Nyambo, Sabah A. Omar, Kweli Powell, Gideon S. Pretorius, Michael W. Smith, Mahamadou A. Thera, Charles Wambebe, James L. Weber, and Scott M. Williams. The Genetic Structure and History of Africans and African Americans(online abstract). Science (journal) (Washington, DC: American Association for the Advancement of Science). May 2009, 324 (5930): 1035–1044 [2010-06-30]. ISSN 0036-8075. OCLC 424238906. PMID 19407144. doi:10.1126/science.1172257. (原始內容存檔於2009-05-06).引文使用過時參數coauthors (幫助)