APA (7th ed.) Citation

O'Sullivan, D. (2009). Wikipedia: A new community of practice? Ashgate.

Chicago Style (17th ed.) Citation

O'Sullivan, Dan. Wikipedia: A New Community of Practice? Farnham [u.a.]: Ashgate, 2009.

MLA (9th ed.) Citation

O'Sullivan, Dan. Wikipedia: A New Community of Practice? Ashgate, 2009.