APA (7th ed.) Citation

Olsen, D. R. (2009). CHI 2009: Conference Proceedings and Extended Abstracts : the 27th annual CHI Conference on Human Factors in Computing Systems : April 4-9, 2009 in Boston, USA. ACM.

Chicago Style (17th ed.) Citation

Olsen, Dan R. CHI 2009: Conference Proceedings and Extended Abstracts : The 27th Annual CHI Conference on Human Factors in Computing Systems : April 4-9, 2009 in Boston, USA. [Place of publication not identified]: ACM, 2009.

MLA (9th ed.) Citation

Olsen, Dan R. CHI 2009: Conference Proceedings and Extended Abstracts : The 27th Annual CHI Conference on Human Factors in Computing Systems : April 4-9, 2009 in Boston, USA. ACM, 2009.