Political and Economic Planning (PEP). (1964). World population and resources. George Allen & Unwin.
Cita Chicago Style (17a ed.)Political and Economic Planning (PEP). World Population and Resources. London: George Allen & Unwin, 1964.
Cita MLA (9a ed.)Political and Economic Planning (PEP). World Population and Resources. George Allen & Unwin, 1964.
Precaución: Estas citas no son 100% exactas.