Kuganda, D., and K. Lumbanbatu. “Unio Non Confusio: An Analysis on the Notion of Activity (Energeia) and Hypostatic Union of Christ in Relation to the Doctrine of Mystical Union”. Veritas: Jurnal Teologi Dan Pelayanan, vol. 22, no. 2, Dec. 2023, pp. 247-68, doi:10.36421/veritas.v22i2.673.