Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Birch, David autor, Peter Worley, y A. C. Grayling. Provocations: Philosophy for Secondary School. Bancyfelin, Carmarthen, Wales SA33 5ND, UK: Crown House Publishing Limited, 2014.

Cita MLA (9a ed.)

Birch, David autor, et al. Provocations: Philosophy for Secondary School. Crown House Publishing Limited, 2014.