Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

Vail, J. R. (1971). Geological reconnaissance in part of Berber District, Northern Province, Sudan. Geological Survey Department.

Chicago Citation Edition Citation

Vail, J. R. Geological Reconnaissance in Part of Berber District, Northern Province, Sudan. [Khartoum]: Geological Survey Department, 1971.

MLA Citation Edition Citation

Vail, J. R. Geological Reconnaissance in Part of Berber District, Northern Province, Sudan. Geological Survey Department, 1971.