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"Pre-colonial Manila". Malacañang Presidential Museum and Library. Malacañang Presidential Museum and Library Araw ng Maynila Briefers. Presidential Communications Development and Strategic Planning Office. 23 Haziran 2015. 9 Mart 2016 tarihinde kaynağından arşivlendi. Erişim tarihi: 27 Nisan 2017.
web.archive.org
"Pre-colonial Manila". Malacañang Presidential Museum and Library. Malacañang Presidential Museum and Library Araw ng Maynila Briefers. Presidential Communications Development and Strategic Planning Office. 23 Haziran 2015. 9 Mart 2016 tarihinde kaynağından arşivlendi. Erişim tarihi: 27 Nisan 2017.