Sources:
- CLAYTON, Mary (2007). The Needlecrafter's Companion. 1001 Stitch Terms and Techniques, London: Collins and Brown, p. 127.
- EATON, Jan (1986). The Complete Stitch Encyclopedia, Twickenham: Hamlyn Publishing, pp. 45, 47.
Digital source of illustration (retrieved 24 January 2017).
WV