| These numbers are estimates, and remain a matter of conjecture | Britannica Book of the Year 2003 |
|---|---|
| The Future of the Global Muslim Population | Britannica Book of the Year 2003 |
| The Future of the Global Muslim Population | |
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| Discusses the estimations of various almanacs and encyclopedium, placing Britannica's estimate as the most agreed figure | On rates of growth, Islam and Pentecostal Christianity are highest, see: , Foreign Policy, May 2007 |
| The spread of Christianity and Islam in Africa: a survey and analysis of the numbers and percentages of Christians, Muslims and those who practice indigenous religions | , as being an outlier |
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| is cited by Morehouse University as giving the mid-1990s figure of 278,250,800 Muslims in Africa, but still as 40 | Pechilis, Karen; Raj, Selva J |
Discusses the estimations of various almanacs and encyclopedium, placing Britannica's estimate as the most agreed figure.
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