Sall, E. (2015). Africa and the challenges of the twenty-first century: Keynote sddresses delivered at the 13th general assembly of CODESRIA (Rabat, Morocco, December 2011). Codesria.
芝加哥风格引文Sall, Ebrima. Africa and the Challenges of the Twenty-first Century: Keynote Sddresses Delivered at the 13th General Assembly of CODESRIA (Rabat, Morocco, December 2011). Dakar, Senegal: Codesria, 2015.
MLA引文Sall, Ebrima. Africa and the Challenges of the Twenty-first Century: Keynote Sddresses Delivered at the 13th General Assembly of CODESRIA (Rabat, Morocco, December 2011). Codesria, 2015.
警告：这些引文格式不一定是100％准确.