The Concept of Freedom and the Development of Sartre's Early Political Thought
Bernard Merkel
The Philosophy of Sartre
Mary Warnock
Sartre and his Predecessors
William Ralph Schroeder
A Study of the Political Philosophy of Merleau-Ponty
Sonia Kruks
Philosophies of Existence
Jean Wahl & F.M. Lory
Introduction to the New Existentialism
Colin Wilson
Existentialism from Within
E.L. Allen
Situation and Human Existence
Sonia Kruks
Encounter with Nothingness
Helmut Kuhn
Beyond Existentialism
J. Von Rintelen