Cita APA (7a ed.)

De Morgan, A., & Heath, P. L. (1966). On the syllogism: And other logical writings. Routledge & Kegan Paul.

Cita Chicago Style (17a ed.)

De Morgan, Augustus, y Peter Lauchlan Heath. On the Syllogism: And Other Logical Writings. London: Routledge & Kegan Paul, 1966.

Cita MLA (9a ed.)

De Morgan, Augustus, y Peter Lauchlan Heath. On the Syllogism: And Other Logical Writings. Routledge & Kegan Paul, 1966.