APA

Dr. Subhi J.m. El-uteib, .Effective Communication Business & Letter Writing. : .

Chicago

Dr. Subhi J.m. El-uteib, .Effective Communication Business & Letter Writing. : .

Harvard

Dr. Subhi J.m. El-uteib, .Effective Communication Business & Letter Writing. : .

MLA

Dr. Subhi J.m. El-uteib, .: . .