Kant, I., & Schwarz, W. (1974). Logic. Bobbs-Merrill.
Lua i Stíl Chicago (17ú heag.)Kant, Immanuel, agus Wolfgang Schwarz. Logic. Indianapolis: Bobbs-Merrill, 1974.
Lua MLA (9ú heag.)Kant, Immanuel, agus Wolfgang Schwarz. Logic. Bobbs-Merrill, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.