APA (7th ed.) Citation

Xiao, Y., Kommers, P., & Isaías, P. (2011). Foreword.

Chicago Style (17th ed.) Citation

Xiao, Y., Piet Kommers, and P. Isaías. Foreword. 2011.

MLA (9th ed.) Citation

Xiao, Y., et al. Foreword. 2011.

Warning: These citations may not always be 100% accurate.