Referencing

I am currently completing an assignment for early years deucation but am having difficulty referencing a document on a webpage

I cant find the original text anywehere so dont know how to reference or qhat to reference it as

Would anyone be able to help?

Suggest you reference as a webpage as follows:

Narahara, M. M. (1998) Gender Stereotypes in Children's Picture Books. Available at: http://files.eric.ed.gov/fulltext/ED419248.pdf (Accessed: 12.11.15)

Full details and for future use.  Follow the guidance here http://lrweb.beds.ac.uk/guides/a-guide-to-referencing/citing-e-sources