1. SCCS (Scientific Committee on Consumer Safety), opinion on vitamin K1 (phytonadione), March 2010. 〈http://ec.europa.eu/health/scientific_committees/consumer_safety/docs/sccs_o_〉 014.pdf (accessed 18.08.16).
2. IARC (International Agency for Research on Cancer) monographs of vitamin K substances, WHO report, 2000, Vol.76. 〈http://monographs.iarc.fr/ENG/Monographs/vol76/mono76-16.pdf〉 (accessed 25.08.16).
3. WHO model list of essential medicines (19th List), April 2015. 〈http://www.who.int/selection_medicines/committees/expert/20/EML_2015_FINAL_amended_AUG2015.pdf?Ua=1〉 (accessed 25.08.16).
4. FDA approved drug products for phytonadione. 〈http://www.accessdata.fda.gov/scripts/cder/drugsatfda/index.cfm?Fuseaction=Search.SearchAction&SearchType=BasicSearch&SearchTerm=PHYTONADIONE〉 (accessed 18.08.16).
5. UK approved drug products for phytomenadione. 〈http://www.medicines.org.uk/emc/search/Phytomenadione?Term=Phytomenadione〉 (accessed 18.08.16).