Ending with a Purl row..
This depends on the pattern's creator of course but normally I read it to end after I knit the purl row. To double check the creator's intentions though I always read the next line of instructions to make sure they have me knitting on the right side. A good share of the time they will indicate that. If they don't, I just follow the read line by line until I'm sure. Hope this helps.
Knitting in NC