Dyfyniad APA

Outes-Leon, I., & Dercon, S. (2009). Survey attrition and attrition bias in Young Lives. Young Lives.

Dyfyniad Arddull Chicago

Outes-Leon, I., and S. Dercon. Survey Attrition and Attrition Bias in Young Lives. Young Lives, 2009.

Dyfyniad MLA

Outes-Leon, I., and S. Dercon. Survey Attrition and Attrition Bias in Young Lives. Young Lives, 2009.

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