APA (7th ed.) Zitazioa
Heyse, L. (2006). Choosing the lesser evil: Understanding decision making in humanitarian aid NGOs. Ashgate.
Chicago Style (17th ed.) Zitazioa
Heyse, Liesbet. Choosing the Lesser Evil: Understanding Decision Making in Humanitarian Aid NGOs. Aldershot, England ; Burlington, VT: Ashgate, 2006.
MLA (9th ed.) Zitazioa
Heyse, Liesbet. Choosing the Lesser Evil: Understanding Decision Making in Humanitarian Aid NGOs. Ashgate, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.