Cita APA (7a ed.)
American journal of preventive medicine [Am J Prev Med] NLMUID: 8704773.
Cita Chicago Style (17a ed.)
American Journal of Preventive Medicine [Am J Prev Med] NLMUID: 8704773.
Cita MLA (9a ed.)
American Journal of Preventive Medicine [Am J Prev Med] NLMUID: 8704773.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.