Geerken, Olaf. „Museums, Missionaries and Middlemen: German Ethnographic Museums and Their Lutheran Missionary Collectors in Central Australia (1890 to 1914)“. Provenance Research on Collections from Colonial Contexts: Principles, Approaches, Challenges, herausgegeben von Claudia Andratschke u. a., arthistoricum.net, 2023, S. 152-6, https://doi.org/10.11588/arthistoricum.1270.c18875.