O'Neil, H. F. (1979). Issues in instructional systems development. Academic Press.
Citazione stile Chigago Style (17a edizione)O'Neil, Harold F. Issues in Instructional Systems Development. Nueva York: Academic Press, 1979.
Citatione MLA (9a ed.)O'Neil, Harold F. Issues in Instructional Systems Development. Academic Press, 1979.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.