我的圖書館

Introductory modal logic

Konyndyk, Kenneth.
Notre Dame, Ind : University of Notre Dame Press, c1986. c1986

Modal logic : an introduction

Chellas, Brian F.
Cambridge [Eng.] ; New York : Cambridge University Press, [1980] 1980

Necessity and possibility : the metaphysics of modality

New York : Garland Pub, 1999. 1999