Human Papilloma Vaccines: Questions & Answers (2018). National Cancer Institute Member Services.
Chicago Style (17th ed.) CitationHuman Papilloma Vaccines: Questions & Answers (2018). National Cancer Institute Member Services.
MLA (9th ed.) CitationHuman Papilloma Vaccines: Questions & Answers (2018). National Cancer Institute Member Services.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.