[1] [CITE[Developer's Guide: Protocol - Google Contacts Data API - Google Code]]
([TIME[2010-08-17 20:48:27 +09:00]] 版)
<http://code.google.com/intl/ja/apis/contacts/docs/3.0/developers_guide_protocol.html>

[2] [CITE[AuthSub for Web Applications - Authentication and Authorization for Google APIs - Google Code]]
([TIME[2010-12-27 18:20:50 +09:00]] 版)
<http://code.google.com/intl/ja/apis/accounts/docs/AuthSub.html>

[3] [CITE@ja[AuthSub for Web Applications - Google Accounts Authentication and Authorization — Google Developers]]
( ([TIME[2012-06-26 17:03:31 +09:00]] 版))
<https://developers.google.com/accounts/docs/AuthSub>