<p>The publication order was <i>Rowan of Rin</i> book 1-4 (not 5 yet), <i>Deltora Quest</i>, <i>Deltora Quest 2</i>, <i>Deltora Quest 3</i>, <i>Rowan of Rin</i> book 5, <i>The Three Doors</i> and <i>Star of Deltora</i>.
</p><p>I personally read all the <i>Deltora Quest</i> series before I read the <i>Rowan of Rin</i> series, as I did not know about it before then, and afterwards I tackled <i>The Three Doors</i> and <i>Star of Deltora</i>, but I think the chronological order that makes the most sense is:
</p><p><u><i>Rowan of Rin</i> (all books), <i>Deltora Quest</i>, <i>Deltora Quest 2</i>, <i>Deltora Quest 3</i>, <i>The Three Doors</i>, <i>Star of Deltora</i>.</u>
</p><p>I suggest reading all the RoR books in a row because the fifth takes place not long after the fourth one, practically the same year.
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