Hintz, Bruno Bernardi, and Paulo Afonso Butzke. “The Practice of Fasting in Christian Spirituality”. Vox Scripturae - Revista Teológica Internacional, vol. 25, no. 1, Apr. 2017, pp. 171-15, https://doi.org/10.25188/FLT-VoxScript(eISSN2447-7443)vXXV.n1.p171-215.BBH.PAB.