Rolls-Royce seeks train conversions to hybrid-electric. IN Shipping Bulletin. Manila Bulletin.
芝加哥风格引文"Rolls-Royce Seeks Train Conversions to Hybrid-electric. IN Shipping Bulletin." Manila Bulletin .
MLA引文"Rolls-Royce Seeks Train Conversions to Hybrid-electric. IN Shipping Bulletin." Manila Bulletin, .
警告：这些引文格式不一定是100％准确.