Cita APA (7th ed.)

Schröder, J. (1971). Was ist Leben?: Josef Schröder. Herder.

Cita Chicago (17th ed.)

Schröder, Josef. Was Ist Leben?: Josef Schröder. Freiburg [u.a.]: Herder, 1971.

Cita MLA (8th ed.)

Schröder, Josef. Was Ist Leben?: Josef Schröder. Herder, 1971.