APA (7th ed.) Citation

Xu, W., Callison-Burch, C., & Napoles, C. Problems in Current Text Simplification Research: New Data Can Help. The MIT Press.

Chicago Style (17th ed.) Citation

Xu, Wei, Chris Callison-Burch, and Courtney Napoles. Problems in Current Text Simplification Research: New Data Can Help. The MIT Press.

MLA (9th ed.) Citation

Xu, Wei, et al. Problems in Current Text Simplification Research: New Data Can Help. The MIT Press.