Cita APA (7a ed.)

Hirst, G. (1981). Anaphora in natural language understanding: A survey. Springer.

Cita Chicago Style (17a ed.)

Hirst, Graeme. Anaphora in Natural Language Understanding: A Survey. Berlin [etc.]: Springer, 1981.

Cita MLA (9a ed.)

Hirst, Graeme. Anaphora in Natural Language Understanding: A Survey. Springer, 1981.