# Books Iāve read āCarl Sagan, una vida en el cosmosā (1999). Genres: Science Ā· Biography Ā· Nonfiction Ā· Astronomy Ā· Physics Ā· Biography Memoir Ā· History Ā· Memoir Ā· Space # References William Poundstoneās website. William Poundstone on Goodreads. William Poundstone on Wikipedia.