Hobson, J. A. (1950). The science of wealth. London: Oxfrod University Press.
Chicago Style aipamenaHobson, John Atkinson. The Science of Wealth. London: Oxfrod University Press, 1950.
MLA aipamenaHobson, John Atkinson. The Science of Wealth. London: Oxfrod University Press, 1950.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.