Williams, D. H. (1998). The Cistercians in the early Middle Ages: Written to commemorate the nine hundredth anniversary of foundation of the Order at Cîteaux in 1098, under the patronage of blessed Vincent Kadłubek, Bishop of Kraków (1208 - 18), monk of Jędrzejów (1218 - 1223) (1. publ.). Gracewing.
Παραπομπή σε μορφή Chicago (17η εκδ.)Williams, David H. The Cistercians in the Early Middle Ages: Written to Commemorate the Nine Hundredth Anniversary of Foundation of the Order at Cîteaux in 1098, Under the Patronage of Blessed Vincent Kadłubek, Bishop of Kraków (1208 - 18), Monk of Jędrzejów (1218 - 1223). 1. publ. Leominster, Herefordshire: Gracewing, 1998.
Παραπομπή σε μορφή MLA (8th εκδ.)Williams, David H. The Cistercians in the Early Middle Ages: Written to Commemorate the Nine Hundredth Anniversary of Foundation of the Order at Cîteaux in 1098, Under the Patronage of Blessed Vincent Kadłubek, Bishop of Kraków (1208 - 18), Monk of Jędrzejów (1218 - 1223). 1. publ. Gracewing, 1998.