Turnock, B. J. (2012). Essentials of public health (2nd ed.). Jones & Bartlett Learning.
Dyfyniad Arddull ChicagoTurnock, Bernard J. Essentials of Public Health. 2nd ed. Sudbury, MA: Jones & Bartlett Learning, 2012.
Dyfyniad MLATurnock, Bernard J. Essentials of Public Health. 2nd ed. Jones & Bartlett Learning, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.