Phillip King, 1969.

Grove Art Online, sitio web, 27 noviembre 2007: (Bridget Louise Riley, born 25 Apr. 1931; English painter & printmaker)

Union List of Artists Names Online, sitio web, 10 marzo 2016: (Riley, Bridget (English painter and printmaker, born 1931). Names: Riley, Bridget; Bridget Riley; Riley, Bridget Louise) http://www.getty.edu/vow/ULANFullDisplay?find=Riley%2C+Bridget&role=&nation=&prev_page=1&subjectid=500013384

RKD artists, sitio web, 10 marzo 2016: (

Wikipedia, 10 marzo 2016: (Bridget Louise Riley (nacida en Norwood, Reino Unido, 1931- ), pintora inglesa, figura destacada dentro del movimiento artístico del Op Art.) http://www.getty.edu/vow/ULANFullDisplay?find=Riley%2C+Bridget&role=&nation=&prev_page=1&subjectid=500013384