Cita APA

Giles, S., & Jay, R. (2010). How to go to sleep......and stay there. Viva Books.

Chicago Edition Citation

Giles, Stephen, i Roni Jay. How to Go to Sleep......and Stay There. New Delhi: Viva Books, 2010.

Cita MLA

Giles, Stephen, i Roni Jay. How to Go to Sleep......and Stay There. Viva Books, 2010.