Zimmern, H. (2000). Arthur Schopenhauer: His life and his philosophy. Batoche.
Citazione stile Chigago Style (17a edizione)Zimmern, Helen. Arthur Schopenhauer: His Life and His Philosophy. Kitchener, Ont.: Batoche, 2000.
Citatione MLA (9a ed.)Zimmern, Helen. Arthur Schopenhauer: His Life and His Philosophy. Batoche, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.