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Vancouver referencing guide (Online): Online journal articles

Mae’r dudalen hon hefyd ar gael yn Gymraeg

Online journal article

Cite all the elements as for a print article, but in addition:

  • Add: “[Internet]” after the title of the journal and before the full stop. For example, Annals of Internal Medicine [Internet].
  • Add a date of citation in square brackets following the date of publication.
  • Add: “Available from:” and provide a URL or doi

Reference list

Authors(s). (Surname followed by initial(s)).

Article title.

Journal name [Internet].

Year of publication [cited date Year Month Day];

Volume number

(Issue number):

Inclusive page number(s) of the article.   (If available - if not count or estimate, e.g. [6 p.] or [ about 12 p.] )

Available from:


Wolinsky FD, Bentler SE, Hockenberry J, Jones MP, Weigel PA, Kaskie B, et al. A prospective cohort study of long-term cognitive changes in older Medicare beneficiaries. BMC Public Health [Internet]. 2011 [cited 2012 Jan 1];11(710): 357-69. Available from:

Jafri H, Alsheikh-Ali AA, Karas RH. Meta-analysis: statin therapy does not alter the association between low levels of high-density lipoprotein cholesterol and increased cardiovascular risk. Annals of Internal Medicine [Internet]. 2010 [cited 2013 Jun 12];153(12): [1 p.]. Available from:

Rothwell PM. Factors that can affect the external validity of randomised controlled trials. PLoS Clinical Trials [Internet]. 2006 [cited 2012 Jun 21];1(1): e9 [5 p.]. Available from: doi: 10.1371/journal.pctr.0010009