Nelson, H. D. (1973). Area handbook for the Democratic Republic of Sudan. U.S. Government Printing Office.
Chicago Style (17th ed.) CitationNelson, Harold D. Area Handbook for the Democratic Republic of Sudan. Washington, D.C: U.S. Government Printing Office, 1973.
MLA citiranjeNelson, Harold D. Area Handbook for the Democratic Republic of Sudan. U.S. Government Printing Office, 1973.
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