APA (7th ed.) Citation

Nelson, H. D. (1973). Area handbook for the Democratic Republic of Sudan. For sale by the Supt. of Docs., U.S. Govt. Print. Off.].

Chicago Style (17th ed.) Citation

Nelson, Harold D. Area Handbook for the Democratic Republic of Sudan. Washington: For sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1973.

MLA (9th ed.) Citation

Nelson, Harold D. Area Handbook for the Democratic Republic of Sudan. For sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1973.