Sporken, P. (1987). Was Sterbende brauchen (4. Aufl.). Herder.
Citazione stile Chigago Style (17a edizione)Sporken, Paul. Was Sterbende Brauchen. 4. Aufl. Freiburg im Breisgau [u.a.]: Herder, 1987.
Citatione MLA (8a ed.)Sporken, Paul. Was Sterbende Brauchen. 4. Aufl. Herder, 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.