Board Thread:General Wiki Discussion/@comment-36247020-20180719083549/@comment-821448-20180719115813

The publication order was Rowan of Rin book 1-4 (not 5 yet), Deltora Quest, Deltora Quest 2, Deltora Quest 3, Rowan of Rin book 5, The Three Doors and Star of Deltora.

I personally read all the Deltora Quest series before I read the Rowan of Rin series, as I did not know about it before then, and afterwards I tackled The Three Doors and Star of Deltora, but I think the chronological order that makes the most sense is:

Rowan of Rin (all books), Deltora Quest, Deltora Quest 2, Deltora Quest 3, The Three Doors, Star of Deltora.

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.