Radder, H. (2006). The world observed, the world conceived. University of Pittsburgh Press.
Citazione stile Chigago Style (17a edizione)Radder, Hans. The World Observed, the World Conceived. Pittsburgh, Pennsylvania: University of Pittsburgh Press, 2006.
Citatione MLA (9a ed.)Radder, Hans. The World Observed, the World Conceived. University of Pittsburgh Press, 2006.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.