APA (7th ed.) Zitazioa
Stroll, A. (2009). Informal philosophy. Rowman & Littlefield Publishers.
Chicago Style (17th ed.) Zitazioa
Stroll, Avrum. Informal Philosophy. Lanham, Md.: Rowman & Littlefield Publishers, 2009.
MLA (9th ed.) Zitazioa
Stroll, Avrum. Informal Philosophy. Rowman & Littlefield Publishers, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.