Nelson, H. D. (1974). Area handbook for the United Republic of Cameroon (First edition.). U.S. Government Printing Office.
Chicagoスタイル(17版)引用形式Nelson, Harold D. Area Handbook for the United Republic of Cameroon. First edition. Washington D.C.: U.S. Government Printing Office, 1974.
MLA(8版)引用形式Nelson, Harold D. Area Handbook for the United Republic of Cameroon. First edition. U.S. Government Printing Office, 1974.
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