The “Works cited in examples in the Guidelines” contain the first item:
No source. This example was made up for the Guidelines/.
I guess the slash before the dot is wrong.
At the end of every chapter in the ePub version there is a copyright information (I guess this is intended), but the final dot is missing from the first sentence:
Distributed under a Creative Commons Attribution 3.0 Unported License
Just in case it helps,