This is the Vancouver style for referencing, used at the Univerity of Portsmouth within the School of Pharmacy and Biomedical Sciences and the Radiography departments.

This guide is modelled on Citing Medicine: The NLM Style Guide for Authors, Editors, and Publishers (2nd edition). You may wish to consult this source directly for additional information or examples.


This page should only be used when referencing an entire website from the homepage onwards. When citing organizations that are national bodies such as government agencies, if a nationality is not part of the name, place the country in parentheses after the name, using the two-letter ISO country code 


For example: Department of Health (GB).


When using an organisation as an author, omit "The". For example, The Society of Radiographers would become Society of Radiographers.


If you are referring to a specific page within a website, see referencing a Webpage 



Author Initials/Organisation's name (if any). Title of the page [Internet]. Place of publication: Publisher; Date or year of publication [updated YYYY Mon DD; cited YYYY Mon DD]. Available from: URL




National Institute for Health and Care Excellence. Evidence search [Internet]. London: National Institute for Health and Care Excellence; c2021 [cited 2021 Jul 19]. Available from:


Society of Radiographers. Welcome to our new site [Internet]. London: Society of Radiographers; c2021 [updated 2021 Apr; cited 2021 Jul 20]. Available from:  


National Library for Health. Your gateway to high quality health information [Internet]. London: NHS; c2021 [cited 2021 Jul 20]. Available from:


Pharmaceutical Services Negotiating Committee [Internet]. Aylesbury: Pharmaceutical Services Negotiating Committee; 2008 [cited 2008 Aug 28]. Available from:


In text citation / reference list

Remember this will be a running number at the first use of a reference. If the reference is re-used then repeat the number allocated.

Keep your style constant, either parenthesis (number) throughout, or superscript number. Do not change between the two. If your department recommends a particular style then use that.


Nice Evidence (16) is a resource the helps you to make evidence-based decisions ...


Nice Evidence 16 is a resource the helps you to make evidence-based decisions ...