APA (7th ed.) Citation

Marshall, J., Mueller, F. ‘., Benford, S., & Pijnappel, S. (2016). Expanding exertion gaming. Elsevier.

Chicago Style (17th ed.) Citation

Marshall, Joe, Florian ‘Floyd’ Mueller, Steve Benford, and Sebastiaan Pijnappel. Expanding Exertion Gaming. Elsevier, 2016.

MLA (9th ed.) Citation

Marshall, Joe, et al. Expanding Exertion Gaming. Elsevier, 2016.