Modal logic for philosophers nork Garson, James W. 1943-

Conditionals and modularity in general logics nork Gabbay, Dov M. 1945-

Available for University of the Philippines Diliman via SpringerLink. Click here to access

Aristotle's modal proofs Prior analytics A8-22 in predicate logic nork Rini, Adriane

Available for University of the Philippines Diliman via SpringerLink. Click here to access

Gentzen calculi for modal propositional logic nork Poggiolesi, Francesca. 1980-

Available for UP System via SpringerLink.

Modality metaphysics, logic, and epistemology

A new introduction to modal logic nork Hughes, G. E. (George Edward) 1918-

Ontology, modality, and the fallacy of reference nork Jubien, Michael

The logic of provability nork Boolos, George

The nature of all being a study of Wittgenstein's modal atomism nork Bradley, Raymond

Languages of possibility an essay in philosophical logic nork Forbes, Graeme