Dyfyniad APA

Rosero Bixby, L. (1991). Socioeconomic development, health interventions and mortality decline in Costa Rica.

Dyfyniad Arddull Chicago

Rosero Bixby, Luis. Socioeconomic Development, Health Interventions and Mortality Decline in Costa Rica. 1991.

Dyfyniad MLA

Rosero Bixby, Luis. Socioeconomic Development, Health Interventions and Mortality Decline in Costa Rica. 1991.

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