What has the author Gregg Mast written?

Gregg Mast has written:
'And grace shines through' -- subject(s): Reformed Church, Devotional exercises, Prayer-books and devotions, Spiritual life, English
'The eucharistic service of the Catholic Apostolic Church and its influence on Reformed liturgical renewals of the nineteenth century' -- subject(s): Catholic Apostolic Church, History, Influence, Liturgy, Lord's Supper (Liturgy), Reformed Church