Cita APA (7a ed.)

Besnard, P. (1989). An introduction to default logic. [S.n.].

Cita Chicago Style (17a ed.)

Besnard, Philippe. An Introduction to Default Logic. Berlín: [S.n.], 1989.

Cita MLA (9a ed.)

Besnard, Philippe. An Introduction to Default Logic. [S.n.], 1989.