American Psychological Association 6th edition

Bird, S., Klein, E., & Loper, E. [ca. 2009]. Natural language processing with Python : "Analyzing text with the natural language toolkit"--Cover. In Safari Books Online [Cd]. Beijing: O’Reilly.

ISO-690 (author-date, English)

BIRD, Steven, KLEIN, Ewan und LOPER, Edward, 2009. Natural language processing with Python : "Analyzing text with the natural language toolkit"--Cover. Beijing: O’Reilly. ISBN 9780596803346.

Modern Language Association 9th edition

Bird, S., E. Klein, und E. Loper. „Natural language processing with Python : ‚Analyzing text with the natural language toolkit‘--Cover“. Safari Books Online, cd, O’Reilly, 2009.

Mohr Siebeck - Recht (Deutsch - Österreich)

Bird, Steven/Klein, Ewan/Loper, Edward: Natural language processing with Python : "Analyzing text with the natural language toolkit"--Cover, Beijing 2009.

Emerald - Harvard

Bird, S., Klein, E. und Loper, E. (2009), Natural language processing with Python : "Analyzing text with the natural language toolkit"--Cover, Safari Books Online, Bd. , O’Reilly, Beijing.

Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.