From the Stitch Description: On all right-side rows (odd numbers) sl all sl-sts with yarn in back; on all wrong-side rows (even numbers) sl all sl-sts with yarn in front. Multiple of 6 sts plus 3. Colors A and B.
Location of Stitch: Chapter 4 (Color-Change Patterns), page 60 from A Treasury of Knitting Patterns.
The pattern is knit with two colors and accomplished with a slip stitch technique.