APA (7th ed.) Citation

Donaldson, J., Chatterton, M., & Kirtley, C. (2006). Usman's books. Parragon.

Chicago Style (17th ed.) Citation

Donaldson, Julia, Martin Chatterton, and Clare Kirtley. Usman's Books. UK: Parragon, 2006.

MLA (9th ed.) Citation

Donaldson, Julia, et al. Usman's Books. Parragon, 2006.