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.
Čikaški stil citiranja (17. izdanje)abdel hady, ahmed m., akmal omara, i vlotman w. f. An Investigation of Clay Percentage at Abu Matamir Area for Envelope Need Deremination. cairo: drainage research institute, 2003.
MLA način citiranja (9. izdanje)abdel hady, ahmed m., et al. An Investigation of Clay Percentage at Abu Matamir Area for Envelope Need Deremination. drainage research institute, 2003.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.