APA

Annas J., Barnes J., . (1985). The modes of scepticism. New York, Estados Unidos: Cambridge University Press.

Chicago

Annas Julia, Barnes Jonathan, . 1985. The modes of scepticism. New York, Estados Unidos: Cambridge University Press.

Harvard

Annas J., Barnes J., . (1985). The modes of scepticism. New York, Estados Unidos: Cambridge University Press.

MLA

Annas Julia, Barnes Jonathan, . The modes of scepticism. New York, Estados Unidos: Cambridge University Press. 1985.