APA (7th ed.) Zitazioa
Draffin, N. (2013). An introduction to LNG bunkering. Published by Petrospot Ltd..
Chicago Style (17th ed.) Zitazioa
Draffin, Nigel. An Introduction to LNG Bunkering. Oxfordshire: Published by Petrospot Ltd., 2013.
MLA (9th ed.) Zitazioa
Draffin, Nigel. An Introduction to LNG Bunkering. Published by Petrospot Ltd., 2013.
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