HTML agility pack for windows phone 8.1

I am still trying programming for windows phone 8.1 but I have a little problem. I want parse HTML data and I found one tutorial for better mind this tutorial = click here; but It works great only in windows phone 7/8 with HTMLAgility pack. I tried manual add library but versions sl3-wp, winrt45 don't support method:

htmlDocument.DocumentNode.SelectNodes("//div[starts-with(@class, 'list_item')]")); 

and version for wp7 doesn't work too. Any Ideas how to parse data for WP 8.1 ? thank you in advance (And sorry for my bad English :) )