Karen Ball. (1899). "Pompeii (Young Reading Level 3) [Paperback] [Dec 31, 1899] NILL". Usborne Export.
芝加哥风格引文Karen Ball. "Pompeii (Young Reading Level 3) [Paperback] [Dec 31, 1899] NILL". Usborne Export, 1899.
MLA引文Karen Ball. "Pompeii (Young Reading Level 3) [Paperback] [Dec 31, 1899] NILL". Usborne Export, 1899.
警告：这些引文格式不一定是100％准确.