Can't Find Call of Bones / Words of Endurance

[Gaxx]

So I'm having a hell of a time trying to get Call of Bones researched. I'm almost lvl 38 already and still haven't had any luck.

I had all of the words at one point and had someone try the combine for me but something happened and their client crashed and everything poofed.

At this point the only thing I'm missing is Words of Endurance. I've been checking the troll vendors in Rathe Mountains and the vendors in Oasis from people hunting specs but haven't had any luck there either.

Would anyone happen to have an extra copy of Words of Endurance that I could buy or any ideas on the easiest way to get some?

Thanks