Cita APA (7th ed.)

Partridge, J., & Sweeten, S. (2001). Blowing Bubbles. Cambridge University Press.

Cita Chicago (17th ed.)

Partridge, Juliet, i Sami Sweeten. Blowing Bubbles. Cambridge: Cambridge University Press, 2001.

Cita MLA (8th ed.)

Partridge, Juliet, i Sami Sweeten. Blowing Bubbles. Cambridge University Press, 2001.