Gatdula, L. S. (1999). Roy Alvarez says healing the environment starts with M.E. Philippine Daily Inquirer.
Čikaški stil citiranja (17. izdanje)Gatdula, Leah Salterio. "Roy Alvarez Says Healing the Environment Starts with M.E." Philippine Daily Inquirer 1999.
MLA način citiranja (9. izdanje)Gatdula, Leah Salterio. "Roy Alvarez Says Healing the Environment Starts with M.E." Philippine Daily Inquirer, 1999.
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