STUMPF, E. S. (2020). Philosophy: A history survey with essential readings. McGraw Hill.
Lua i Stíl Chicago (17ú heag.)STUMPF, Enoch Samuel. Philosophy: A History Survey with Essential Readings. McGraw Hill, 2020.
Lua MLA (9ú heag.)STUMPF, Enoch Samuel. Philosophy: A History Survey with Essential Readings. McGraw Hill, 2020.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.