DK. & Blackburn, S. (2019). Philosophers: Their lives and works. Dorling Kindersley Limited.
Citazione stile Chigago Style (17a edizione)DK. e Simon Blackburn. Philosophers: Their Lives and Works. London: Dorling Kindersley Limited, 2019.
Citatione MLA (9a ed.)DK. e Simon Blackburn. Philosophers: Their Lives and Works. Dorling Kindersley Limited, 2019.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.