References
^ Ian S. MarkhamLiturgical Life Principles : How Episcopal Worship Can Lead to Healthy and Authentic Living by Ian S. Markham (2009, Paperback) ISBN 9780819223241 (revised Mar 2015)^ Markham, Ian S. (2014). Liturgical Life Principles : How Episcopal Worship Can Lead to Healthy and Authentic Living, Abingdon Pr. BiggerBooks. ISBN 9780819223241 (revised Jul 2023)
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