This is how to knit a correct purl stitch in Continental style, where the yarn is fed through the left hand while knitting, rather than through the right hand.
by Knitting Stitch Patterns
by Nakshi Katha
by Tithi's Craft Corner
by Loom Knitting with Joanna
by Sheruknittingcom
by Sonysree Creations 32 Jewelry
by Maggie Weldon