Tjiptoherijanto, P. Contribution of petroleum to Indonesian economy: A case study of oil industry.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTjiptoherijanto, Prijono. Contribution of Petroleum to Indonesian Economy: A Case Study of Oil Industry.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTjiptoherijanto, Prijono. Contribution of Petroleum to Indonesian Economy: A Case Study of Oil Industry.
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