APA (7th ed.) Zitazioa
Nathans, S. (2012). To free a family: The journey of Mary Walker. Harvard University Press.
Chicago Style (17th ed.) Zitazioa
Nathans, Sydney. To Free a Family: The Journey of Mary Walker. Cambridge, MA: Harvard University Press, 2012.
MLA (9th ed.) Zitazioa
Nathans, Sydney. To Free a Family: The Journey of Mary Walker. Harvard University Press, 2012.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.