Lucia Bova, L'arpa moderna. La scrittura e la notazione, lo strumento e il repertorio dal '500 alla contemporaneità, preface by Luis de Pablo, Suvini Zerboni, Milano, 2008. ISBN 978-88-900691-4-7
"The Origins of the Clairsach or Irish Harp", Musical Times, Vol. 53, No 828 (Feb 1912), pp 89–92.
Alasdair Ross discusses that all the Scottish harp figures were copied from foreign drawings and not from life, in "'Harps of Their Owne Sorte'? A Reassessment of Pictish Chordophone Depictions", Cambrian Medieval Celtic Studies 36, Winter 1998.
Snyder's Medieval Art, 2nd ed, p. 32. Luttikhuizen and Verkerk.
Courteau, Mona-Lynn. "Harp". In J. Shepherd, D. Horn, D. Laing, P. Oliver and P. Wicke (Eds.), The Continuum Encyclopedia of Popular Music of the World, Vol. 2, 2003, các trang 427–437.
