Arnold, H. J. P. Aid for developing countries. London: The Bodley Head.
Chicago Style aipamenaArnold, H. J. P. Aid for Developing Countries. London: The Bodley Head.
MLA aipamenaArnold, H. J. P. Aid for Developing Countries. London: The Bodley Head.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.