Young, Frances M. & Teal, Andrew: From Nicaea to Chalcedon: A Guide to the Literature and Its Background, s. 83–91. Hymns Ancient and Modern Ltd, 2010. ISBN 0334029937Teoksen verkkoversio.
Burton-Christie, Douglas: The Word in the desert: scripture and the quest for holiness in early Christian monasticism, s. 76–84. Oxford [Oxfordshire]: Oxford University Press, 1993. ISBN 0-19-508333-4Teoksen verkkoversio.
Bagnall, Roger S. & Rathbone, Dominic: Egypt from Alexander to the Early Christians: An Archaeological and Historical Guide. (J. Paul Getty Museum) Getty Publications, 2004. ISBN 0892367962Teoksen verkkoversio.
Yong, Amos: Pneumatology and the Christian-Buddhist Dialogue: Does the Spirit Blow through the Middle Way? s. 111. (Studies in Systematic Theology) Brill, 2012. ISBN 9004231242Teoksen verkkoversio.
Barlow, Claude: Fathers of the Church: Iberian Fathers: Martin of Braga/Paschasius of Dumium/Leander of Seville, s. 113–114. Washington, D.C: Catholic University of America Press, 1969. ISBN 0-8132-0062-8Teoksen verkkoversio.