Cita APA (7a ed.)

BIRD, S. (2009). NATURAL LANGUAGE PROCESSING WITH PYTHON. o'reilly/spd.

Cita Chicago Style (17a ed.)

BIRD, S. NATURAL LANGUAGE PROCESSING WITH PYTHON. mumbai: o'reilly/spd, 2009.

Cita MLA (9a ed.)

BIRD, S. NATURAL LANGUAGE PROCESSING WITH PYTHON. o'reilly/spd, 2009.