abdel hady, a. m., omara, a., & vlotman w. f. (2003). An Investigation of clay percentage at abu matamir area for envelope need deremination. drainage research institute.
Չիկագոյի ոճի (17րդ խմբ.) մեջբերումabdel hady, ahmed m., akmal omara, and vlotman w. f. An Investigation of Clay Percentage at Abu Matamir Area for Envelope Need Deremination. cairo: drainage research institute, 2003.
MLA (9րդ խմբ.) Մեջբերումabdel hady, ahmed m., et al. An Investigation of Clay Percentage at Abu Matamir Area for Envelope Need Deremination. drainage research institute, 2003.