Tan, R. L. (1998). When does a charitable donation become a tax deductible act?. IN Tax files [column]. Philippine Daily Inquirer.
Chicagoスタイル(17版)引用形式Tan, Roberto L. "When Does a Charitable Donation Become a Tax Deductible Act?. IN Tax Files [column]." Philippine Daily Inquirer 1998.
MLA(9版)引用形式Tan, Roberto L. "When Does a Charitable Donation Become a Tax Deductible Act?. IN Tax Files [column]." Philippine Daily Inquirer, 1998.
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