APA (7th ed.) Zitazioa
Maddy, P. (2007). Second philosophy: A naturalistic method. Oxford University Press.
Chicago Style (17th ed.) Zitazioa
Maddy, Penelope. Second Philosophy: A Naturalistic Method. Oxford ; New York: Oxford University Press, 2007.
MLA (9th ed.) Zitazioa
Maddy, Penelope. Second Philosophy: A Naturalistic Method. Oxford University Press, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.