Luitenant-kolonel Sumual bereid om in Djakarta verantwoording af te leggen (Lt-Col Sumual willing to account in Jakarta)

Indische Courant voor Nederland, 16 Mar 1957, p. 1: after the East Indonesian military proclamation, parliament considers sending observers to T.T. VII including Mrs Ch. Salawati (PKI); the PKI central committee condemns Sumual's action as linked to Colonel Lubis and SEATO subversion.