APA (7th ed.) Citation

Eckstein, R. (1999). XML pocket reference: [extensible markup language] (1. ed.). O'Reilly.

Chicago Style (17th ed.) Citation

Eckstein, Robert. XML Pocket Reference: [extensible Markup Language]. 1. ed. Beijing [u.a.]: O'Reilly, 1999.

MLA (9th ed.) Citation

Eckstein, Robert. XML Pocket Reference: [extensible Markup Language]. 1. ed. O'Reilly, 1999.