Housley, Kathleen L. (2019). «Rebuilding the World». I Housley, Kathleen L. The Scientific World of Karl-Friedrich Bonhoeffer: The Entanglement of Science, Religion, and Politics in Nazi Germany (på engelsk). Springer International Publishing. s.239–266. ISBN978-3-319-95801-9. doi:10.1007/978-3-319-95801-9_13. Besøkt 8. desember 2024.
Housley, Kathleen L. (2019). «Rebuilding the World». I Housley, Kathleen L. The Scientific World of Karl-Friedrich Bonhoeffer: The Entanglement of Science, Religion, and Politics in Nazi Germany (på engelsk). Springer International Publishing. s.239–266. ISBN978-3-319-95801-9. doi:10.1007/978-3-319-95801-9_13. Besøkt 8. desember 2024.