APA (7th ed.) Citation

Hannah Roche, Chris Fisher, & Marianne Godwin. (1998). My gran is great! Zero to Ten.

Chicago Style (17th ed.) Citation

Hannah Roche, Chris Fisher, and Marianne Godwin. My Gran Is Great! Slough: Zero to Ten, 1998.

MLA (9th ed.) Citation

Hannah Roche, et al. My Gran Is Great! Zero to Ten, 1998.