Sharp, A. Shadow over the Marsh: Can you discover the dark secret which threatens your very life?
芝加哥风格引文Sharp, Allen. Shadow over the Marsh: Can You Discover the Dark Secret Which Threatens Your Very Life?
MLA引文Sharp, Allen. Shadow over the Marsh: Can You Discover the Dark Secret Which Threatens Your Very Life?
警告：这些引文格式不一定是100％准确.