@Misc{BVMC:273439,
author = {Iglesia Católica. [Breviarium]},
title = {Officium Inmaculatae Conceptionis B. Mariae Virginis, cum octaua.},
url = {http://www.cervantesvirtual.com/obra/officium-inmaculatae-conceptionis-b-mariae-virginis-cum-octaua}
}