Tjiptoherijanto, P. Contribution of petroleum to Indonesian economy: A case study of oil industry.
Čikaški stil citiranja (17. izdanje)Tjiptoherijanto, Prijono. Contribution of Petroleum to Indonesian Economy: A Case Study of Oil Industry.
MLA način citiranja (9. izdanje)Tjiptoherijanto, Prijono. Contribution of Petroleum to Indonesian Economy: A Case Study of Oil Industry.
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