Questing for advanced tradeskill scroll/books

[Stabbath]

Is there a way to get advanced tradeskill books/scrolls from questing? If so, where could I find tier 6 and 7 please? The broker is way too expensive.

[GrunEQ]

<span style="font-size: small;font-family: comic sans ms,sand;">You can do quests offered by tradeskill Grandmasters that are usually found in the main tradeskill area of each city.  You will however only be able to obtain 1 book for each tier, but you get to choose.</span>

[Stabbath]

ok, thanks.