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.
Chicago (17e ed.) Bronvermeldingabdel hady, ahmed m., akmal omara, en vlotman w. f. An Investigation of Clay Percentage at Abu Matamir Area for Envelope Need Deremination. cairo: drainage research institute, 2003.
MLA (9e ed.) Bronvermeldingabdel hady, ahmed m., et al. An Investigation of Clay Percentage at Abu Matamir Area for Envelope Need Deremination. drainage research institute, 2003.
Let op: Deze citaties zijn niet altijd 100% accuraat.