CIEŚLAK, Tadeusz. Boockmann Hartmut, Laurentius Blumenau — Fürstlicher Rat — Jurist — Humanist. Czasopismo Prawno-Historyczne, [S. l.], v. 18, n. 1, p. 257–258, 1966. DOI: 10.14746/cph.1966.18.1.17. Disponível em: https://pressto.amu.edu.pl/index.php/cph/article/view/51421. Acesso em: 12 luty. 2026.