Books can be attributed to "Unknown" when the author or editor (as applicable) is not known and cannot be discovered. If at all possible, list at least one actual author or editor for a book instead of using "Unknown".
Books whose authorship is purposefully withheld should be attributed instead to Anonymous.
The first two books I read focused on analyzing the characteristics and influence of the Qin system (or Qin imperial rule); this one has a greater concern for the present, even describing how the path forward should be taken. Some sections reveal an underlying tone of opposing Marx and Engels while waving their banner, which creates a certain contrastive beauty (or ironic aesthetic).
The right path is not necessarily between left and right; the common bottom line of correspondence between rights and responsibilities is the real issue.