APA (7th ed.) Zitazioa
Velleman, J. D. (2015). Beyond price: Essays on birth and death. Open Book Publishers.
Chicago Style (17th ed.) Zitazioa
Velleman, J. David. Beyond Price: Essays on Birth and Death. Cambridge: Open Book Publishers, 2015.
MLA (9th ed.) Zitazioa
Velleman, J. David. Beyond Price: Essays on Birth and Death. Open Book Publishers, 2015.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.