(1918). The foundations of national prosperity: Studies in the conservation of permanent national resources. New York: The Macmillan Comapny.
Chicago Style aipamenaThe Foundations of National Prosperity: Studies in the Conservation of Permanent National Resources. New York: The Macmillan Comapny, 1918.
MLA aipamenaThe Foundations of National Prosperity: Studies in the Conservation of Permanent National Resources. New York: The Macmillan Comapny, 1918.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.