Biblioteca Nacional Francesa http://data.bnf.fr/12025816
Libris (Suecia) http://libris.kb.se/resource/auth/218221
ISNI http://isni-url.oclc.nl/isni/0000000121356178
Biblioteca del Congreso de los EEUU http://id.loc.gov/authorities/names/n78095389
VIAF http://viaf.org/viaf/61560236
Sudoc http://www.idref.fr/028419308
Biblioteca Nacional Alemana http://d-nb.info/gnd/118778692
Fuente consultada

WWW BL OPAC, 4-1-2006

Piers Plowman, 1916

Oxford companion to English literature, 1973

Información encontrada

port. (William Langland)

(Langland, William (1330?-1400?); poet)

(Langland, William, 1330?-1400?)