APA (7th ed.) Citation

McKenna, E. (2014). Groundbreakers: How Obama's 2.2 Million Volunteers Transformed Campaigning in America. Oxford Scholarship Online.

Chicago Style (17th ed.) Citation

McKenna, Elizabeth. Groundbreakers: How Obama's 2.2 Million Volunteers Transformed Campaigning in America. Oxford Scholarship Online, 2014.

MLA (9th ed.) Citation

McKenna, Elizabeth. Groundbreakers: How Obama's 2.2 Million Volunteers Transformed Campaigning in America. Oxford Scholarship Online, 2014.

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