APA (7th ed.) Citation

Donaldson, J., Collins, R., & Kirtley, C. (2006). Gran is cross. Parragon.

Chicago Style (17th ed.) Citation

Donaldson, Julia, Ross Collins, and Clare Kirtley. Gran Is Cross. UK: Parragon, 2006.

MLA (9th ed.) Citation

Donaldson, Julia, et al. Gran Is Cross. Parragon, 2006.