Vertically Inclined Climbing Higher With God - Leader Kit by MaryKassian Board Book, Published 2004 by Lifeway Christian Resources ISBN-13: 978-0-633-09668-7, ISBN: 0-633-09668-7
Disciplines of a Godly Man(Updated) ( Edition) by R. KentHughes Paperback, 336 Pages, Published 2019 by Crossway ISBN-13: 978-1-4335-6130-6, ISBN: 1-4335-6130-1