Cita APA (7th ed.)

Hasson, G. (2022). 21 Day Mindfulness Challenge. John Murray Learning.

Cita Chicago (17th ed.)

Hasson, Gill. 21 Day Mindfulness Challenge. UK: John Murray Learning, 2022.

Cita MLA (9th ed.)

Hasson, Gill. 21 Day Mindfulness Challenge. John Murray Learning, 2022.