Keifert, P. R. (2022). Olsen, Steen, Jacob’s Ladder: Missional Church in the 1970s: St. Marys, Australia: SA & RL Olsen, 2020. ISBN-13: 978-06-4899-680-4. Ecclesial Futures, 3(1), 125–127. https://doi.org/10.54195/ef12159