APA (7th ed.) Citation

(2017). Understanding regular expressions: Identifying, verifying, and manipulating text data efficiently and easily. O'Reilly.

Chicago Style (17th ed.) Citation

Understanding Regular Expressions: Identifying, Verifying, and Manipulating Text Data Efficiently and Easily. [Place of publication not identified]: O'Reilly, 2017.

MLA (8th ed.) Citation

Understanding Regular Expressions: Identifying, Verifying, and Manipulating Text Data Efficiently and Easily. O'Reilly, 2017.