How to cite an internet source within your document?

Can anyone offer advice on how to cite an internet source within your document/paragraph. I have multiple sentences within the paragraph that all relate to my source, but the site does not offer an author or any kind of date? I've got how to do my reference page, I just cannot find any info on this situation.

Thanks for any help!!

Julie

See example:

According to The Innocence Project ( ) some simple variables identified by social science researchers include situations such as identifying someone from a far distance or trying to identify someone in poor lighting conditions.