Não informado. (1971). Bulletin of Economic Research. University of Hull, Department of Economics.
Chicago-Zitierstil (17. Ausg.)Não informado. Bulletin of Economic Research. Hull, Inglaterra: University of Hull, Department of Economics, 1971.
MLA-Zitierstil (8. Ausg.)Não informado. Bulletin of Economic Research. University of Hull, Department of Economics, 1971.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.