Lua APA (7ú heag.)

Simon, J. L. (1990). Population matters: People, resources, environment and immigration. Transaction.

Lua i Stíl Chicago (17ú heag.)

Simon, Julian L. Population Matters: People, Resources, Environment and Immigration. New Brunswick, N.J: Transaction, 1990.

Lua MLA (9ú heag.)

Simon, Julian L. Population Matters: People, Resources, Environment and Immigration. Transaction, 1990.

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