Quest epic weapon I cannot kill enemies in Book of skyfire I

I doing Epic weapon quest. In "Book of Skyfire I" in order kill Enemies last one "Zahar'ak Pugilist" the location is in Zahar'ak at Southern Thanalan. I came here and try to kill them but it doesn't counted in the book and up on it's head there is no icon same as Enemies target icon.
- Is there another way to fix this with out I have to buy new book.

You're almost certainly attacking the wrong targets. There are Zahar'ak Pugilist and Zanr'ak Pugilists in nearly the same area (slightly different levels).

Its the "H" in the spelling, got me too. Like said above. They're up on the hill, not the gorge.