Tan, R. L. (1998). When does a charitable donation become a tax deductible act?. IN Tax files [column]. Philippine Daily Inquirer.
Citação norma ChicagoTan, Roberto L. "When Does a Charitable Donation Become a Tax Deductible Act?. IN Tax Files [column]." Philippine Daily Inquirer 1998.
Citação norma MLATan, Roberto L. "When Does a Charitable Donation Become a Tax Deductible Act?. IN Tax Files [column]." Philippine Daily Inquirer, 1998.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.