APA
Nelson H. D., American University (Washington D. F. A. S. & American University (Washington D. F. A. S. D. A. h. f. N. (1972). Area handbook for Nigeria. Washington: For sale by the Supt. of Docs., U.S. Govt. Print. Off.].
Chicago
Nelson Harold D, American University (Washington D.C.) Foreign Area Studies and American University (Washington D.C.) Foreign Areas Studies Division Area handbook for Nigeria. 1972. Area handbook for Nigeria. Washington: For sale by the Supt. of Docs., U.S. Govt. Print. Off.].
Harvard
Nelson H. D., American University (Washington D. F. A. S. and American University (Washington D. F. A. S. D. A. h. f. N. (1972). Area handbook for Nigeria. Washington: For sale by the Supt. of Docs., U.S. Govt. Print. Off.].
MLA
Nelson Harold D, American University (Washington D.C.) Foreign Area Studies and American University (Washington D.C.) Foreign Areas Studies Division Area handbook for Nigeria. Area handbook for Nigeria. Washington: For sale by the Supt. of Docs., U.S. Govt. Print. Off.]. 1972.