Human Papilloma Vaccines: Questions & Answers (2018). National Cancer Institute Member Services.
Cita Chicago (17th ed.)Human Papilloma Vaccines: Questions & Answers (2018). National Cancer Institute Member Services.
Cita MLA (9th ed.)Human Papilloma Vaccines: Questions & Answers (2018). National Cancer Institute Member Services.
Atenció: Aquestes cites poden no estar 100% correctes.