The 30 September Movement: A Political Movement of the Armed Forces or an Intelligence Operation?
The 30 September Movement: a political movement of the armed forces or an intelligence operation? (Holtzappel, 1979)
Journal article by Coen Holtzappel (Journal of Contemporary Asia, 1979) analysing the Untung and Njono trial records to argue the 30 September Movement was steered by Air Force and Army intelligence, with Sjam's Pringgodani group deliberately compromising the PKI and Aidit. Gerwani is mentioned only once, in a footnote