References
- Maack, R. (1923). Der Brandberg. Ein Beitrag zur Landeskunde von Südwestafrika. Zeitschrift der Gesellschaft für Erdkunde zu Berlin, 1923(No. 1-2), 1–14.
- http://www.reinhard-maack.de; German language website with a list of his 96 (map) publications. The map and article on the Brandberg by the then already 31 years old are his first known publications.