No date: If there is no year of publication, use [date unknown].
Place of publication: For the place of publication - after the city, include the state code in brackets for USA/Canada or the country code for outside of the USA/Canada, e.g. St Louis (MI) or Auckland (NZ).
If there is no place of publication, use [place unknown].
Publisher: If there is no publisher, use [publisher unknown].
Page numbers: If there are no page numbers, calculate the number of pages or screens, e.g. [about 2 p.] or [about 4 screens].
For more information on reference list format and style, see General information - basics of referencing.
If the author cannot be identified, place the title in the author's position.
1. Author/organization's name. Title of the page [Internet]. Place of publication: Publisher's name; Publication date or year [updated/revised date - year month day; cited date - year month day]. Available from: URL
1. D'Alessandro DM, D'Alessandro MP. Virtual Pediatric Hospital™: a digital library of pediatric information [Internet]. Iowa City: Donna M. D'Alessandro; c1992-2018 [revised 2018 Jan 1; cited 2018 Jan 31]. Available from: http://www.virtualpediatrichospital.org/
1. Medsafe [Internet]. Wellington (NZ): New Zealand Medicines and Medical Devices Safety Authority; 2012 [cited 2017 Nov 30]. Available from: http://www.medsafe.govt.nz/
1. Title of homepage [Internet]. Place of publication: Publisher's name; Publication date. Title of specific page/part; Date of publication of part [updated/revised date; cited date of part]; [number of screens]. Available from: URL of part
1. Medsafe [Internet]. Wellington: New Zealand Medicines and Medical Devices Safety Authority. New Zealand datasheet: Voltaren Rapid 25 tablets; 2016 Jun [cited 2017 Nov 30]; [about 20 screens]. Available from: http://www.medsafe.govt.nz/Profs/Datasheet/v/voltarentab.htm
When using another person's ideas or words include an Arabic numeral in brackets (consecutively numbered). If the reference is referred to again, the same number is used.
... has been recently identified (1). There is a need to be cautious with giving aspirin to children as overdosing can lead to mortality (1).
If you are expressing ideas that have originated from more than one source, separate the numbers with commas, or use a hyphen if referring to a range of numbers (references).
.. in alkyl sulphates such as sodium lauryl sulphate (3,5-6) and diethyl sulphate (7). Other compounds showing promise were those in the C12 - C14 range (3-4).