Sources:
- CLAYTON, Mary (2007). The Needlecrafter's Companion. 1001 Stitch Terms and Techniques, London: Collins and Brown, p. 59.
- EATON, Jan (1986). The Complete Stitch Encyclopedia, Twickenham: Hamlyn Publishing, pp. 93, 95.
Digital source of illustration (retrieved 26 January 2017).
WV