40 Years of the PKI
'40 Tahun PKI', compiled by the PKI History Institute (Lembaga Sejarah PKI) for the party's 40th anniversary, Yayasan Pembaruan, Jakarta 1960, following D.N. Aidit's 'Lahirnya PKI dan perkembangannya'. A party-line history from the 1920 founding through the 1926 uprising, Japanese occupation, revolution and the VI Cong
Tempo, 2 October 2021: From priyayi daughter to underground activist (how Umi Sardjono became an activist)
Tempo biographical feature (2 Oct 2021, Isma Savitri and Nurdin Kalim) on Umi Sardjono's early life: born Suharti Sumodiwirjo in Salatiga, 24 Dec 1923, inspired by Kartini, joined Parindra then Gerindo, worked as an underground courier in East Java, tortured by the Japanese in 1943 alongside S.K. Trimurti, married Suki