APA (7th ed.) Citation

Strong, J., & John Levers. (2001). There's a Viking in my bed and other stories. Puffin.

Chicago Style (17th ed.) Citation

Strong, Jeremy, and John Levers. There's a Viking in My Bed and Other Stories. London: Puffin, 2001.

MLA (9th ed.) Citation

Strong, Jeremy, and John Levers. There's a Viking in My Bed and Other Stories. Puffin, 2001.