Castro, E. R. (1997). Balancing population resources and environment. Manila Bulletin.
Chicagoスタイル(17版)引用形式Castro, Eddee RH. "Balancing Population Resources and Environment." Manila Bulletin 1997.
MLA(9版)引用形式Castro, Eddee RH. "Balancing Population Resources and Environment." Manila Bulletin, 1997.
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