CIA intelligence survey of the PKI's history, structure and front organisations, May 1955, before the September 1955 elections. Section III.E (report pp. 49-50) profiles Gerwani: founded 1950 as Gerwis, renamed Gerwani at the March 1954 congress, 25,000+ members, S.K. Trimurti general chairman and Umi Sardjono chairman
Tempo.co explainer (29 Sept 2021) on organisations 'considered affiliated' with the PKI: Gerwani, Lekra, SOBSI, Pemuda Rakjat. It states, citing Wieringa, that Gerwis became Gerwani at its 1954 second congress, electing PKI member Umi Sardjono as chair. Short, background-level.
Deden Rahmanudin, 'Gerwani Mazhab Politik Islam Era Soekarno' (Jurnal Kewarganegaraan 6:2, 2022), a literature-based article presenting Gerwani as a feminist movement and discussing it from an Islamic viewpoint (Sukarno's Sarinah, Hamka). Drawing on Wieringa and Lestariningsih, it recounts Gerwani's 1950 founding, MPs