Dyfyniad APA

.Elder, J. P. (2001). Behavior change & public health in the developing world. Sage Publications.

Dyfyniad Arddull Chicago

.Elder, John P. Behavior Change & Public Health in the Developing World. Thousand Oaks, Calif: Sage Publications, 2001.

Dyfyniad MLA

.Elder, John P. Behavior Change & Public Health in the Developing World. Sage Publications, 2001.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.