Bibliography:

http://eresources.nlb.gov.sg/infopedia/articles/SIP_1702_2010-09-16.html

https://roots.sg/Content/Places/national-monuments/church-of-the-nativity-of-the-blessed-virgin-mary

http://www.nativity.sg

http://www.montfortians.org

http://www.lionraw.com/2012/01/16/385/