The Possible and the actual  readings in the metaphysics of modality /  [Texte imprimé] : 
ed. by Michael J. Loux 
 - Ithaca:  Cornell University Press,  1979 
<br/><br/>Bibliogr. p. 317-330 
<br/><br/><label>ISBN: </label>0-8014-9178-9 
<br/><br/><label>Dewey Class. No.: </label>110