The Canadian Encyclopedia. 2011. "Submersible"互联网档案馆的存檔，存档日期2017-12-04.. The Canadian Encyclopedia. F.J. Chambers 02/07/2006 Archived copy. [2011-10-20]. （原始内容存档于March 15, 2012）.
thecanadianencyclopedia.com
The Canadian Encyclopedia. 2011. "Submersible"互联网档案馆的存檔，存档日期2017-12-04.. The Canadian Encyclopedia. F.J. Chambers 02/07/2006 Archived copy. [2011-10-20]. （原始内容存档于March 15, 2012）.
web.archive.org
The Canadian Encyclopedia. 2011. "Submersible"互联网档案馆的存檔，存档日期2017-12-04.. The Canadian Encyclopedia. F.J. Chambers 02/07/2006 Archived copy. [2011-10-20]. （原始内容存档于March 15, 2012）.
