S.K. Trimurti, Pejuang Perempuan Indonesia (Jazimah, 2016)
S.K. Trimurti, Indonesian woman fighter (Jazimah, 2016)
Ipong Jazimah's 2016 biographical sketch of S.K. Trimurti (1912-2008): journalist, labour minister, Gerwis co-founder, Petisi 50 signatory. Pages 50-51 cover Gerwis's founding; relies on a few secondary sources.