Existentialisme

MLA

Barrett, William Christopher, and J. A Jacobs. Existentialisme. Utrecht: Spectrum, 1965.

APA

Barrett, W. Christopher, & Jacobs, J. A. (1965). Existentialisme. Utrecht: Spectrum.

Chicago

Barrett, William Christopher, Existentialisme. Translated by J. A Jacobs. Utrecht: Spectrum, 1965.