APA

Horn v. R., .Information Sestems Solutions aproject approach. London:Mcgraw hill,2006: .

Chicago

Horn van Richardواخرون, .Information Sestems Solutions aproject approach. London:Mcgraw hill,2006: .

Harvard

Horn v. R., .Information Sestems Solutions aproject approach. London:Mcgraw hill,2006: .

MLA

Horn van Richardواخرون, .London:Mcgraw hill,2006: . .