APA (7th ed.) Citation

Walker John R, Longobardi Teresa, Graff Lesley A, & Bernstein Charles N. (2011). Health service utilization in IBD: Comparison of self-report and administrative data. BMC.

Chicago Style (17th ed.) Citation

Walker John R, Longobardi Teresa, Graff Lesley A, and Bernstein Charles N. Health Service Utilization in IBD: Comparison of Self-report and Administrative Data. BMC, 2011.

MLA (9th ed.) Citation

Walker John R, et al. Health Service Utilization in IBD: Comparison of Self-report and Administrative Data. BMC, 2011.

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