David, R. J. (1999). The World of the six billion baby. IN At large [column]. Philippine Daily Inquirer.
Chicagoスタイル(17版)引用形式David, Ring Jimenez. "The World of the Six Billion Baby. IN At Large [column]." Philippine Daily Inquirer 1999.
MLA(9版)引用形式David, Ring Jimenez. "The World of the Six Billion Baby. IN At Large [column]." Philippine Daily Inquirer, 1999.
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