Dyfyniad APA

Sánchez-Retana, C., & Leiva-Granados, R. (2016). Incidence factors in the use of contraceptives among adolescents and young adult people in Costa Rica.

Dyfyniad Arddull Chicago

Sánchez-Retana, Carmen, y Rolando Leiva-Granados. Incidence Factors in the Use of Contraceptives Among Adolescents and Young Adult People in Costa Rica. 2016.

Dyfyniad MLA

Sánchez-Retana, Carmen, y Rolando Leiva-Granados. Incidence Factors in the Use of Contraceptives Among Adolescents and Young Adult People in Costa Rica. 2016.

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