How to cite in-text same source multiple times (chicago style)?
There is no necessity to repeat a citation each and every time you refer to the paper. Whenever it is clear from the context to which work you refer to, there is nothing wrong with using words such as "they", "he", or "she" to refer to the author(s) of other works. 

For example, you could write:


  In her essay titled “Electronic Literature: What is it?”, N. Katherine Hayles (2007) gives an account of the state of electronic literature. She maintains [...]