[1] WebTrust SM/TM for Certification Authorities WebTrust Principles and Criteria for Certification Authorities – Extended Validation SSL – Version 1.4.5 Based on: CA/Browser Forum Guidelines for the Issuance and Management of Extended Validation SSL Certificates – Version 1.4.5 ( 版) <http://www.webtrust.org/homepage-documents/item79807.pdf>
[2] Trust Services | Chartered Accountants of Canada ( 版) <http://www.webtrust.org/item64428.aspx>