@book {2023,
	title = {Usuarium. A Guide to the Study of Latin Liturgical Uses in the Middle Ages ad the Early Modern Period},
	year = {2023},
	pages = {388},
	publisher = {ELTE BTK Vall{\'a}studom{\'a}nyi K{\"o}zpont- Liturgiat{\"o}rt{\'e}neti Kutat{\'o}csoport},
	organization = {ELTE BTK Vall{\'a}studom{\'a}nyi K{\"o}zpont- Liturgiat{\"o}rt{\'e}neti Kutat{\'o}csoport},
	address = {Budapest},
	isbn = {978-615-6448-32-3},
	url = {http://real.mtak.hu/172372/?fbclid=IwAR0_lbNShPhnCievwMKDl02Tp9pNppCFntNFgjVZv2pY3gL0fz9ffsdyARc},
	author = {Mikl{\'o}s Istv{\'a}n F{\"o}ldv{\'a}ry}
}
