APA (7th ed.) Citation

Livingstone, I., Crosby, E., & Ward, G. (2003). Caverns of the snow witch. Wizard Books.

Chicago Style (17th ed.) Citation

Livingstone, Ian, Edward Crosby, and Gary Ward. Caverns of the Snow Witch. Cambridge: Wizard Books, 2003.

MLA (9th ed.) Citation

Livingstone, Ian, et al. Caverns of the Snow Witch. Wizard Books, 2003.