APA (7th ed.) Citation

Sharp, A. Shadow over the Marsh: Can you discover the dark secret which threatens your very life?

Chicago Style (17th ed.) Citation

Sharp, Allen. Shadow over the Marsh: Can You Discover the Dark Secret Which Threatens Your Very Life?

MLA (8th ed.) Citation

Sharp, Allen. Shadow over the Marsh: Can You Discover the Dark Secret Which Threatens Your Very Life?

Warning: These citations may not always be 100% accurate.