APA

DR. Osama M. El-shafee, .Soil mechanics and foundation engineering. : .

Chicago

DR. Osama M. El-shafee, .Soil mechanics and foundation engineering. : .

Harvard

DR. Osama M. El-shafee, .Soil mechanics and foundation engineering. : .

MLA

DR. Osama M. El-shafee, .: . .