If you are doing legal citation, you will want to use Jurism, a version of Zotero with much expanded legal citation capabilities. Jurism is equipped to cite Philippine law (among other international jurisdictions) out of the box. Select the Indigo Book style—this will format your citations according the jurisdiction specified for the item. If you have questions or need a style adapted for specific requirements for non-legal items, I suggest you post on the Jurism mailing list.
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