Confronting the Past: the anticommunist killings of 1965-66 and the role of Nahdlatul Ulama (McGregor, 2009)
Katharine McGregor's 2009 article on NU's support for the 1965-66 killings (e.g. its 5 Oct 1965 call to ban the PKI, Gerwani and others), their celebration under the New Order and Syarikat's post-1998 reconciliation work. Context on religious-organisation role.
The Cold War in the City of Heroes: US-Indonesian Relations and Anti-Communist Operations in Surabaya (Setiyawan, 2014)
PhD dissertation in History (UCLA, 2014) by Dahlia Gratia Setiyawan on U.S. anti-communist operations and the 1965-66 purge in Surabaya. Gerwani appears in context: as the PKI's women's affiliate (ch. 1), through the Surabaya women's coalition GOWS in the 27 September 1965 Grahadi demonstration (ch. 4), and in the Army
The Killing Season: A History of the Indonesian Massacres, 1965-66 (Robinson, 2018)
Geoffrey Robinson's 2018 synthesis of the 1965-66 violence (about 500,000 killed, a million detained), arguing the army provoked and organised it, the US and allies facilitated it, and colonial and Cold War history set the preconditions. Context; Gerwani in the propaganda chapters.