el - sherbini, a. f., & hassouna, w. a. (1969). the role of institutes of public health in national health planning. the institute of national planning.
Παραπομπή σε μορφή Chicago (17η εκδ.)el - sherbini, ahmed f., και w. a. hassouna. The Role of Institutes of Public Health in National Health Planning. cairo: the institute of national planning, 1969.
Παραπομπή σε μορφή MLA (9th εκδ.)el - sherbini, ahmed f., και w. a. hassouna. The Role of Institutes of Public Health in National Health Planning. the institute of national planning, 1969.