1. Abed A. (1982). Geology of Jordan . Islamic Library Publications Amman Jordan.
2. Austin G. T. (1984). Shreve's chemical process industries 5th Ed. McGraw Hill Inc. New York N.Y.
3. Differential Settlement of Buildings
4. Hutchison C. H. S. (1974). Laboratory hand book of petrographic techniques . John Wiley & Sons Inc. New York N.Y.
5. Manual on soil testing; D 2049-69 . (1973). ASTM West Conshohocken Pa.