APA (7th ed.) Citation

Charles, V. M. (2007). Don't open the door! Tundra Books.

Chicago Style (17th ed.) Citation

Charles, Veronika Martenova. Don't Open the Door! Toronto, Ont: Tundra Books, 2007.

MLA (9th ed.) Citation

Charles, Veronika Martenova. Don't Open the Door! Tundra Books, 2007.

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