Gaya APA

Indonesia, R, O. (1968). Contract of Work Between the Ministry of Mines of the Republic of Indonesia and N.V. Billiton Maatschappij . : .

Gaya MLA

Indonesia, Republic, Of. "Contract of Work Between the Ministry of Mines of the Republic of Indonesia and N.V. Billiton Maatschappij". : , 1968. Text.