APA (7th ed.) Citation

Ifenthaler, D., Pirnay-Dummer, P., & Seel, N. (2010). Preface.

Chicago Style (17th ed.) Citation

Ifenthaler, Dirk, P. Pirnay-Dummer, and N. Seel. Preface. 2010.

MLA (9th ed.) Citation

Ifenthaler, Dirk, et al. Preface. 2010.

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