Cita APA (7a ed.)
Patočka, J., Chvatík, I., Ucník, L., & Landgrebe, L. The Natural World As a Philosophical Problem. Northwestern University.
Cita estilo Chicago (17a ed.)
Patočka, Jan, Ivan Chvatík, L'ubica Ucník, y Ludwig Landgrebe. The Natural World As a Philosophical Problem. Evanston, EUA: Northwestern University.
Cita MLA (9a ed.)
Patočka, Jan, et al. The Natural World As a Philosophical Problem. Northwestern University.
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