Stutje 2015. Stutje, Klaas (2015). "To Maintain an Independent Course: Inter-war Indonesian Nationalism and International Communism on a Dutch-European Stage". Dutch Crossing: Journal of Low Countries Studies (in Dutch). 39 (3): 204–220. doi:10.1080/03096564.2015.1101298. S2CID146939108.
Stutje 2015. Stutje, Klaas (2015). "To Maintain an Independent Course: Inter-war Indonesian Nationalism and International Communism on a Dutch-European Stage". Dutch Crossing: Journal of Low Countries Studies (in Dutch). 39 (3): 204–220. doi:10.1080/03096564.2015.1101298. S2CID146939108.