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Companion to the United Methodist hymnal
Nashville: Abingdon Press, 1993, 940 p.
Sadie, Stanley
The new Grove dictionary of music and musicians
Robijns, Jozef
Zijlstra, Miep
Algemene muziek enciclopedie
hoofdred., J. Robijns en Miep Zijlstra
Haarlem: De Haan, [1979]-1984
Roberts, John (translator)
Roberts, E. Ernest
John Roberts, telynor Cymru. Trosiad ir Gymraeg [or Saes neg] gan Selyf Roberts.
Dinbych [i.e. Denbigh]: Gwasg Gee 1978.
Mit Ill. u. Noten.
Text in walisischer Spr.
Note: Enthalt e. Ubers. von John Roberts Briefen an Francis Hindes Groome.
Hayden, Andrew
British hymn writers and composers
A check-list
Croydon, England: Hymn Society of Great Britain & Ireland, 1977
Davies, Thomas James
Ieuan Gwyllt. Y Parchedig John Roberts.
Llandysul: Gwasg Gomer 1977. 111 S.
Mit Faks. u. Noten.
In walisischer Spr.
Composers
p. 273 In:
Higginson, J. Vincent
Handbook for American catholic hymnals
Springfield, Ohio: Hymn Society of America, 1976
Routley, Erik
Parry, K.L.
Companion to congregational praise
Edited by K.L. Parry, Minster of Highbury Chapel, Bristol
With notes on the music by Erik Routley, lecturer and chaplain of Mansfield College, Oxford
London: Independent Press Ltd., 1953
Smith, J. Sutcliffe
Impressions of music in Wales
Penmaenmawr, Wales: Venture Press, 1948
Bekker, Leander Jan de
Black's dictionary of music & musicians ... from earliest times to 1924 ...
Boase, Frederic
Modern English biography ...
Truro: 1892-1921, 6 vols.
Jones, M.O.
Bywgraffiaeth cerddorion Cymreig