Wrigley, E. A. The Limits to growth: Malthus and the classical economist.
Cita Chicago Style (17a ed.)Wrigley, E. A. The Limits to Growth: Malthus and the Classical Economist.
Cita MLA (9a ed.)Wrigley, E. A. The Limits to Growth: Malthus and the Classical Economist.
警告：這些引文格式不一定是100％准確.