Heller, Erich (1988),

The Importance of Nietzsche (University of Chicago Press, Chicago).

Heller, Peter (1966),

Dialectics and Nihilism (The University of Massachusetts Press, Amherst, Mass).

Jones, Ernest (1955),

Siegmund Freud, Life and Work,

ii (Hogarth Press, London).

Kaufmann, Walter (1974),

Nietzsche (4th edn., Princeton University Press, Princeton, NJ).

Kundera, Milan (1984),

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