Rujukan Dos penggalak

  1. ↑ Tetanus: Prevention, Mayo Clinic, 2006-09-21, diarkibkan daripada yang asal pada 2008-06-24, dicapai pada 2008-07-17
  2. ↑ Van Damme, Pierre; Van Herck, Koen (2007-03-01). "A review of the long-term protection after hepatitis A and B vaccination". Travel Medicine and Infectious Disease. 1st International Conference of Travel Medicine and Infectious Disease1st International Conference of Travel Medicine and Infectious Disease. 5 (2): 79–84. doi:10.1016/j.tmaid.2006.04.004. PMID 17298912.
  3. ↑ Leuridan, Elke; Damme, Pierre Van (2011-07-01). "Hepatitis B and the Need for a Booster Dose". Clinical Infectious Diseases (dalam bahasa Inggeris). 53 (1): 68–75. doi:10.1093/cid/cir270. ISSN 1058-4838. PMID 21653306.
  4. ↑ Committee, Institute of Medicine (US) Vaccine Safety; Stratton, Kathleen R.; Howe, Cynthia J.; Richard B. Johnston, Jr (1994-01-01). "Immunologic Reactions" (dalam bahasa Inggeris). National Academies Press (US). Cite journal requires |journal= (bantuan)
  5. ↑ University of the Sciences in Philadelphia; David B. Troy; Joseph Price Remington; Paul Beringer (2005). Remington: the science and practice of pharmacy. Lippincott Williams & Wilkins. ISBN 978-0-7817-4673-1.
  6. ↑ "Top 20 Questions about Vaccination — History of Vaccines". www.historyofvaccines.org. Dicapai pada 2016-01-30.
  7. ↑ Charles A Janeway, Jr; Travers, Paul; Walport, Mark; Shlomchik, Mark J. (2001-01-01). "Immunological memory" (dalam bahasa Inggeris). Cite journal requires |journal= (bantuan)