RT Book T1 Manuale Caeremoniarum in missa et altaris ministerio: juxta ritum sacri ordinis cisterciensis servandarum ad usum monachorum strictioris observantiæ auctoritate et mandato capituli generalis LA Latin PP Westmalle PB Typographia Ordinis Cisterciensium Reformatorum YR 1948 ED editum 2a editio UL https://www.ixtheo.de/Record/1107116570