情報源
- https://eresources.nlb.gov.sg/newspapers/Digitised/Article/straitstimes19651216-1.2.119
- https://eresources.nlb.gov.sg/newspapers/Digitised/Article/straitstimes19651217-1.2.123.2
- https://eresources.nlb.gov.sg/newspapers/Digitised/Article/straitstimes19651218-1.2.125
- https://eresources.nlb.gov.sg/newspapers/Digitised/Article/straitstimes19651219-1.2.76