Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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

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