Cita APA

Grayling, A. C. 1., & Grayling, A. C. 1. (2008). Scepticism and the possibility of knowledge. London: Continuum.

Citación estilo Chicago

Grayling, Anthony Clifford 1949-, y Anthony Clifford 1949- Grayling. Scepticism and the Possibility of Knowledge. London: Continuum, 2008.

Cita MLA

Grayling, Anthony Clifford 1949-, y Anthony Clifford 1949- Grayling. Scepticism and the Possibility of Knowledge. London: Continuum, 2008.