【9】卓源利，「青山內外盡膠園，宏茂橋里話當年」—青山內的前世今生，https://www.facebook.com/groups/265763383605892/?post_id=999680316880858 accessed 25 June 2020.
【10】卓源利，「宗親雲集成大姓，南來聚居似家村」—卓姓聚居的楊厝港六巡村，https://www.facebook.com/groups/265763383605892/?post_id=1218631388319082 accessed 25 June 2020.
【11】Housing and Development Board, https://www.hdb.gov.sg/cs/infoweb/about-us/history/hdb-townsyour-home/ang-mo-kio accessed 12 June 2020.
【12】Municipal committee, Singapore Free Press and Mercantile Advertiser, 17 May 1855.
（作者為英國皇家造船師學會會士、自由文史工作者）
