[1] Protocol Guide (v3.0) - Google Documents List Data API v3.0 - Google Code (2009-10-10 03:25:53 +09:00 版) <http://code.google.com/intl/ja-JP/apis/documents/docs/3.0/developers_guide_protocol.html>

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

[3] Developer's Guide Overview - Google Data APIs — Google Developers ( (2012-04-27 20:51:10 +09:00 版)) <https://developers.google.com/gdata/docs/developers-guide>