De Morgan, A. (1966). On the syllogism, and other logical writings. Routledge & K. Paul.
Citazione stile Chigago Style (17a edizione)De Morgan, Augustus. On the Syllogism, and Other Logical Writings. London: Routledge & K. Paul, 1966.
Citatione MLA (8a ed.)De Morgan, Augustus. On the Syllogism, and Other Logical Writings. Routledge & K. Paul, 1966.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.