Simon, J. L. (1990). Population matters: People, resources, environment and immigration. Transaction.
Chicago-viite (17. p.)Simon, Julian L. Population Matters: People, Resources, Environment and Immigration. New Brunswick, N.J: Transaction, 1990.
MLA-viite (9. p.)Simon, Julian L. Population Matters: People, Resources, Environment and Immigration. Transaction, 1990.
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