APA

De Morgan A., . (1966). On the syllogism, and other logical writings. New Haven: Yale University Press.

Chicago

De Morgan Augustus, . 1966. On the syllogism, and other logical writings. New Haven: Yale University Press.

Harvard

De Morgan A., . (1966). On the syllogism, and other logical writings. New Haven: Yale University Press.

MLA

De Morgan Augustus, . On the syllogism, and other logical writings. New Haven: Yale University Press. 1966.