Cita APA (7th ed.)

Birch, D., & Worley, P. (2014). Provocations: Philosophy for secondary school. Crown House Publishing Limited.

Cita Chicago (17th ed.)

Birch, David, i Peter Worley. Provocations: Philosophy for Secondary School. Bancyfelin, Camarthen, Wales, [England]: Crown House Publishing Limited, 2014.

Cita MLA (9th ed.)

Birch, David, i Peter Worley. Provocations: Philosophy for Secondary School. Crown House Publishing Limited, 2014.