Sock 6, page 32.

Socks knit toe-up with afterthought heel.

From the book’s description:
“Elbistan”: 27 stitch, 24 row repeat.
(The pattern outside the diamond often appears alone and is called an apple. Although it looks very different, it’s just a small variation on the Elbistan stitch.)

Simply Socks is the softbound title of Fancy Feet.