Gaya APA
Laut, D, -, D, P.
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Introduction to liquefied gas tankers
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DJP - Dirjend Perhubungan Laut.
Gaya MLA
Laut, DJP, -, Dirjend, Perhubungan.
"Introduction to liquefied gas tankers".
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DJP - Dirjend Perhubungan Laut,
2010.
CD-ROM.