Friedman, M. L. Space, time, and geometry: Einstein and logical empiricism / Michael L. Friedman. Einstein for the 21st century : his legacy in science, art, and modern culture.(2008).
Lua i Stíl Chicago (17ú heag.)Friedman, Michael L. "Space, Time, and Geometry: Einstein and Logical Empiricism / Michael L. Friedman." Einstein for the 21st Century : His Legacy in Science, Art, and Modern Culture.(2008) .
Lua MLA (8ú heag.)Friedman, Michael L. "Space, Time, and Geometry: Einstein and Logical Empiricism / Michael L. Friedman." Einstein for the 21st Century : His Legacy in Science, Art, and Modern Culture.(2008), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.