Cunningham, M. (1972). Intelligence: Its organization and development. Academic Press.
Citazione stile Chigago Style (17a edizione)Cunningham, Michael. Intelligence: Its Organization and Development. New York: Academic Press, 1972.
Citatione MLA (9a ed.)Cunningham, Michael. Intelligence: Its Organization and Development. Academic Press, 1972.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.