PhD dissertation (Yale, 1967) by R. William Liddle, a political-science study of local parties and political integration in Simalungun regency and Pematangsiantar, North Sumatra, based on 1963-64 fieldwork. Gerwani appears in a few brief passages in ch. VI: listed among PKI mass organizations (p. 190), given no members
Historia article (2019) on women's wings of parties in the 1955 election (Perwamu, Parkiwa, Wanita Demokrat, Aisyiyah, Bhayangkari), noting the PKI grew close to Gerwani and that Mudigdio and Umi Sardjono entered the DPR for the PKI. Context on Gerwani and elections.
Charles P. Sullivan's PhD dissertation (History, University of Michigan, 2020) reads Indonesian women's magazines (Wanita, Puspa Wanita, Varia) from 1945-66 to argue that the Lubang Buaya narrative about Gerwani worked as a 'post-text' of long-running anxieties over modernity, moral crisis and the 'Mother of the Nation