APA (7th ed.) Citation

De Morgan, A. (2014). Formal logic =: Or, The calculus of inference, necessary and probable. Cambridge University Press.

Chicago Style (17th ed.) Citation

De Morgan, Augustus. Formal Logic =: Or, The Calculus of Inference, Necessary and Probable. Cambridge: Cambridge University Press, 2014.

MLA (9th ed.) Citation

De Morgan, Augustus. Formal Logic =: Or, The Calculus of Inference, Necessary and Probable. Cambridge University Press, 2014.