[1] Apple - iTunes - Podcasts - Making a Podcast ( (Apple Inc. 著, 2012-06-02 23:52:39 +09:00 版)) <http://www.apple.com/itunes/podcasts/specs.html>

[2] Apple - iTunes - Podcasts - Making a Podcast ( (Apple Inc. 著, 2013-08-11 04:21:20 +09:00 版)) <http://www.apple.com/itunes/podcasts/specs.html>