Witherell, J. W. (1973). French-speaking central Africa: A guide to official publications in American libraries. General Reference and Bibliography Division, Library of Congress; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.].
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Witherell, Julian W. French-speaking Central Africa: A Guide to Official Publications in American Libraries. Washington: General Reference and Bibliography Division, Library of Congress; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1973.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Witherell, Julian W. French-speaking Central Africa: A Guide to Official Publications in American Libraries. General Reference and Bibliography Division, Library of Congress; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1973.