Cita APA (7a ed.)

Pereira, F. C. N., & Shieber, S. M. (1987). Prolog and natural-language analysis. Center for the Study of Language and Information.

Cita Chicago Style (17a ed.)

Pereira, Fernando C. N., y Stuart M. Shieber. Prolog and Natural-language Analysis. Stanford, California: Center for the Study of Language and Information, 1987.

Cita MLA (9a ed.)

Pereira, Fernando C. N., y Stuart M. Shieber. Prolog and Natural-language Analysis. Center for the Study of Language and Information, 1987.