APA (7th ed.) Citation

Trilling, B., & Fadel, C. (2009). 21st century skills: Learning for life in our times (1. ed.). Jossey-Bass.

Chicago Style (17th ed.) Citation

Trilling, Bernie, and Charles Fadel. 21st Century Skills: Learning for Life in Our Times. 1. ed. San Francisco: Jossey-Bass, 2009.

MLA (9th ed.) Citation

Trilling, Bernie, and Charles Fadel. 21st Century Skills: Learning for Life in Our Times. 1. ed. Jossey-Bass, 2009.