Pachart Foundation. (1983). Philosophy in Science. Pachart Publishing House.
Lua i Stíl Chicago (17ú heag.)Pachart Foundation. Philosophy in Science. Tucson, Ariz: Pachart Publishing House, 1983.
Lua MLA (8ú heag.)Pachart Foundation. Philosophy in Science. Pachart Publishing House, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.