Carmichael, Liz, Interpreting Christian Love (T&T Clark/Continuum, 2004) ISBN 0567080722.

Congregation for Divine Worship, Directory on Popular Piety.

Cummings, Charles Monastic Practices, (Cistercian Pub., 1986) ISBN: 0879078758.

Foster, Richard J., Celebration of Discipline, the Path to Spiritual Growth, (Harper, 1978) ISBN 0060628391.

Funk, OSB, Mary Margaret, Tools Matter for Practicing the Spiritual Life,  (Continuum 2004). ISBN: 0826416551.;

Thoughts Matter, The Practice of the Spiritual Life, Continuum 1998 ISBN: 0826411649.

McGuire, Brian Patrick, Friendship and Community, the Monastic Experience 350-1250 (Cistercian Pub., 1988).

Stewart, Columba, Prayer and Community, (Orbis Books, 1998) ISBN: 1570752192

Ward, Benedicta, Harlots of the Desert, A Study of Repentance in Early Monastic Sources, (Cistercian Pub., 1987).

Wimbush, Vincent, ed. Ascetic Behavior in Greco-Roman Antiquity, (Fortress Press. 1990),

Wimbush, Vincent & Richard Valantasis, ed. Asceticism, (Oxford University Press, 1995).

Willard, Dallas, The Spirit of the Disciplines, (Harper 1988).

Aumann, Jordan, Spiritual Theology, (Sheed and Ward, 1980).

Spiritual Theology in the Catholic Tradition (Ignatius Press, 1985)

Bunge, Gabriel, Earthen Vessels: The Practice of Personal Prayer According to the Patristic Tradition tr. Michael Miller, (Ignatius Press, March 2002) ISBN: 0898708370

Clément,Olivier, The Roots of Christian Mysticism, Text and Commentary  (New City Press, NY, 1996), ISBN 1565480295

Cummings, Charles, Monastic Practices, (Cistercian, 1986) ISBN: 0879078758)

Downey, Michael (ed.), The New Dictionary of Catholic Spirituality, (Liturgical Press, 1993).

McGrath, Alister E., Christian Spirituality (Blackwell, 1999).

Tugwell, Simon, OP, Ways of Imperfection, (Templegate, 1985) ISBN:  0872431649 

Tanquerey, Adolphe, The Spiritual Life, A Treatise on Ascetical and Mystical Theology, (Desclee, New York, 1930).

Ancient Christian Writers (Paulist Press); Ante-Nicene, Nicene, and Post-Nicene Fathers (Eerdmans: download from Christian Classics Ethereal Library at <http://www.ccel.org>)

Bouyer, Louis, ed., A History of Christian Spirituality, 3 vol. (Seabury, 1977),

Cross, F. L., The Oxford Dictionary of the Christian Church, (Oxford University Press).

Evennett, H. Outram,  The Spirit of the Counter-Reformation (Cambridge University Press, 1968).

Louth, Andrew The Origins of the Christian Mystical Tradition from Plato to Pseudo-Dionysius, (Oxford University Press).

McGinn, Bernard, Christian Spirituality: Origins to the Twelfth Century (World Spirituality, No 16) (Crossroad, 1987); ISBN: 0824508475.

  –– Christian Spirituality : High Middle Ages and Reformation (World Spirituality, No 17) (Crossroad, 1988) ISBN: 0824507657.

  –– The Foundations of Mysticism, The Presence of God: A History of Western Christian Mysticism, vol 1, (SCM Press, 1992). ISBN: 0824514041

  –– The Growth of Mysticism The Presence of God: A History of Western Christian Mysticism, vol 2, (Crossroad/Herder & Herder, 1994) ISBN: 0824514505

  –– The Flowering of Mysticism: Men and Women in the New Mysticism (1200-1350), The Presence of God, vol 3, (Crossroad/Herder & Herder. 2001) ISBN: 0824517431

Quasten, Johannes, Patrology ,4 vol., (Christian Classics, Inc., 1988).

Tyson, John R. Invitation to Christian Spirituality, An Ecumenical Anthology, (Oxford U. Pr., June  1999) ISBN: 0195106377