Harper's Encyclopedia of Mystical & Paranormal Experience
Rosemary Guiley
Dictionary of Mysticism
Frank Gaynor
Explanation in Causal Inference: Methods for Mediation and Interaction
Tyler Vanderweele
Materialism and the Metaphysics of Modality (Essay)
David John Chalmers
Theoretical Philosophy After 1781
Immanuel Kant
Age of Chivalry Or Legends of King Arthur
Thomas Bulfinch