Albert Camus,

The Myth of Sisyphus and Other Essays (New York: Vintage, 1991).

Gabriel Marcel,

The Philosophy of Existentialism (New York: Citadel, 1961).

Maurice Merleau-Ponty, 'The Battle over Existentialism’,

Sense and Non-Sense (Evanston, IL: Northwestern University Press, 1964).

Friedrich Nietzsche,

Human, All Too Human: A Book for Free Spirits (Cambridge: Cambridge University Press, 1986). ---,

Thus Spoke Zarathustra (New York: Viking Compass, 1966).

Jean-Paul Sartre,

Shafi da ba'a sani ba