Lowry, J. H. (1970). World population and food supply. Edward Arnold.
Cita Chicago (17th ed.)Lowry, J. H. World Population and Food Supply. London: Edward Arnold, 1970.
Cita MLA (9th ed.)Lowry, J. H. World Population and Food Supply. Edward Arnold, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.