APA (7th ed.) Citation

Mustakallio, K., & Krötzl, C. (2009). Preface.

Chicago Style (17th ed.) Citation

Mustakallio, Katariina, and Christian Krötzl. Preface. 2009.

MLA (9th ed.) Citation

Mustakallio, Katariina, and Christian Krötzl. Preface. 2009.

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