APA (7th ed.) Citation

Ifenthaler, D., Gibson, D., & Zheng, L. (2018). Attributes of engagement in challenge-based digital learning environments.

Chicago Style (17th ed.) Citation

Ifenthaler, D., David Gibson, and L. Zheng. Attributes of Engagement in Challenge-based Digital Learning Environments. 2018.

MLA (9th ed.) Citation

Ifenthaler, D., et al. Attributes of Engagement in Challenge-based Digital Learning Environments. 2018.