APA (7th ed.) Zitazioa

Human Papilloma Vaccines: Questions & Answers (2018). National Cancer Institute Member Services.

Chicago Style (17th ed.) Zitazioa

Human Papilloma Vaccines: Questions & Answers (2018). National Cancer Institute Member Services.

MLA (9th ed.) Zitazioa

Human Papilloma Vaccines: Questions & Answers (2018). National Cancer Institute Member Services.

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