The GNOME Foundation is governed by its bylaws. The canonical place for the current bylaws is the governance page in the Foundation section of gnome.org.
We used to have the Foundation's Web page on http://foundation.gnome.org which was made redundant by a WordPress installation. Unfortunately, accessing the WordPress' storage is not as comfortable as the old Git module.
So far, the canonical place is the Foundation's website which is in WordPress. We could make this wiki the canonical place for the bylaws, though.