APA (7th ed.) Citation

Clarke, J., & Johansson, C. (2003). Tusk trouble. Hodder Children's.

Chicago Style (17th ed.) Citation

Clarke, Jane, and Cecilia Johansson. Tusk Trouble. London: Hodder Children's, 2003.

MLA (9th ed.) Citation

Clarke, Jane, and Cecilia Johansson. Tusk Trouble. Hodder Children's, 2003.