APA (7th ed.) Citation

Graves, S., Carletti, E., & Carletti, D. (2019). I'm not happy. Franklin Watts.

Chicago Style (17th ed.) Citation

Graves, Sue, Emanuela Carletti, and Desideria Carletti. I'm Not Happy. London: Franklin Watts, 2019.

MLA (8th ed.) Citation

Graves, Sue, et al. I'm Not Happy. Franklin Watts, 2019.