por Williams, Bernard Arthur Owen [autor] | Marin, Susan [traductor] | Universidad Nacional Autónoma de México. Instituto de Investigaciones Filosóficas.
por Korsgaard, Christine Marion [autor] | Cohen, G. A. (Gerald Allan), 1941-2009 [autor] | Geuss, Raymond [autor] | Nagel, Thomas, 1937- [autor] | Williams, Bernard Arthur Owen [autor] | O'Neill, Onora, 1941- [editor] | Lecuona, Laura [traductor] | Manríquez, Laura Evelia [traductor] | Korsgaard, Christine Marion. Sources of normativity.