“R. Witte, De Indische Radio-Omroep. Overheidsbeleid En Ontwikkeling 1923-1942”. BMGN - Low Countries Historical Review 114, no. 3 (January 1, 1999): 459–461. Accessed July 18, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-105806.