Rolls-Royce seeks train conversions to hybrid-electric. IN Shipping Bulletin. Manila Bulletin.
Čikaški stil citiranja (17. izdanje)"Rolls-Royce Seeks Train Conversions to Hybrid-electric. IN Shipping Bulletin." Manila Bulletin .
MLA način citiranja (9. izdanje)"Rolls-Royce Seeks Train Conversions to Hybrid-electric. IN Shipping Bulletin." Manila Bulletin, .
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