Flowers & Leaves: 70 Stitch Patterns You'll Like to Knit-Eyelet Fern, Blackberry Stitch, Ribbon and Rosets, Classic Frost Flowers, Christmas Tree, and Many More! - The Editors Of Go-Crafty: 9781938867590 - AbeBooks
How to Knit: TRINITY STITCH | Simple Bobbly Knitting Pattern | AKA Bramble / Blackberry / Raspberry - YouTube
The Weekly Stitch: Raspberry Stitch - Trinity Stitch
How to knit the Blackberry Stitch pattern. – Sip Knit Yarn