Lewis, S. (2010). Creating Incentives to Improve Population Health. Centers for Disease Control and Prevention.
Chicago Style aipamenaLewis, Steven. Creating Incentives to Improve Population Health. Centers for Disease Control and Prevention, 2010.
MLA aipamenaLewis, Steven. Creating Incentives to Improve Population Health. Centers for Disease Control and Prevention, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.