APA (7e ed.) Bronvermelding
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 (17e ed.) Bronvermelding
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 (9e ed.) Bronvermelding
Nelson, Harold D. Area Handbook for the Democratic Republic of Sudan. For sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1973.
Let op: Deze citaties zijn niet altijd 100% accuraat.