1- Title: Field Studies in Geography
Author: Professor. Alsaid Al Bushra Mohammed Ahmed – Dr. Abbas Altayeb Babiker
Publisher: Localization Management, University of Khartoum.
Date: 2010
pp. 140.
2- Title: Field Studies in Geography (Book systematic decision: Jgr: 4042) Education Program
Author: Professor. Alsaid Al Bushra Mohammed Ahmed – Dr. Abbas Altayeb Babiker
Publisher: Open University of Sudan – Khartoum
Date: 2006
pp.204.