ebrary, Inc, & Van As, E. (2012). Africa at a glance: Facts and figures (15th ed.). Africa Institute of South Africa.
芝加哥风格引文ebrary, Inc, 与 Elize Van As. Africa at a Glance: Facts and Figures. 15th ed. Pretoria: Africa Institute of South Africa, 2012.
MLA引文ebrary, Inc, 与 Elize Van As. Africa at a Glance: Facts and Figures. 15th ed. Africa Institute of South Africa, 2012.
警告：这些引文格式不一定是100％准确.