(på engelska) Christmas carols, ancient and modern, including th most popular in the west of England, and the airs to which the are sung.: Also specimens of French provincial carols. With an introduction and notes by William Sandys.. London. 1833. Libris2590469
Dearmer Percy, Vaughan Williams Ralph, Shaw Martin, red (1928) (på engelska). The Oxford Book of carols. London: Oxford University Press. sid. 36. Libris10494483