Bradshaw 
New SCM Dictionary of Liturgy and Worship [EPUB ebook] 

This reference work incorporates the insights and expertise of leading liturgists and scholars of liturgy at work today, comprising 200 entries on important topics in the field, from vestments and offertories to ordination and divine unction. It is systematically organized and alphabetically arranged for ease of use. It also includes comprehensive bibliographies and reading lists, to bring the work fully up to date and to encourage further reading and research