When should interviews be used in a multi-hurdle selection p

When should interviews be used in a multi-hurdle selection process? Are structured interviews best? Why or why not? Do multiple interviewers add validity to the hiring decision? Explain. Please provide a 150-200 word response to the question and please use at least 1 reference. Also please cite reference in APA 6th edition format and please provide doi or www info for reference if applicable.