If you have used someone else’s dataset for your research, you should give proper credit to its creators.
At minimum, these elements should be present in any dataset citation:
Author (creators of the dataset)
Title (of the dataset)
Publication date (of the dataset)
Publisher (name of repository where the data is published)
Version number (of the dataset, if any)
Location (URL / DOI to access the dataset)
The way these elements would be arranged, or combined together in the finished citation, would depend on the citation style requirements of the publisher.
When saving a data citation to your citation management software (e.g. EndNote), remember to specify the Reference Type as “dataset”. By doing this, if your chosen citation style (e.g. APA 6th Edition) has a predefined format for citing datasets, that format will be applied to the citation when you insert it into your paper.
[Reference Type selection box at the tup right hand side of EndNote Screen]
If “dataset” is not available in the list of Reference Types (Note: other software may call this field Item Type or Document Type), select an electronic resource type (e.g. online journal article).
Here are some guides from other universities on citing datasets:
Here are some examples of data repositories with guidelines or suggested formats on how to cite data.