Books can be attributed to "Anonymous" for several reasons:
* They are officially published under that name * They are traditional stories not attributed to a specific author * They are religious texts not generally attributed to a specific author
Books whose authorship is merely uncertain should be attributed to Unknown.
This is a really great translation; easy to understand but still very true to the original manuscripts. I was given a copy in 2004 by someone involved with its publishing and definitely underestimated it at the time. I thought it was just going to be one more edition to add to my little collection but I really like this one. I love all the little notes about alternate manuscripts and translations.