SUMITRO, D. (1990). English For Science And Technology Djoko Sumitro. Gama Press.
Cita Chicago Style (17a ed.)SUMITRO, Djoko. English For Science And Technology Djoko Sumitro. Gama Press, 1990.
Cita MLA (8a ed.)SUMITRO, Djoko. English For Science And Technology Djoko Sumitro. Gama Press, 1990.
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