The employees can recommend their acquaintances for the company job openings. All such references can be viewed from the Referrals Report available under Reports > Report Center > Recruiting. Select the dates to view the recommendations for and click View. 
From the report, you can check:
- Candidate Name - the name of the candidate who was created in the Candidate Database due to the employee recommendation
- Referred by - the name of the employee who recommended the current candidate
- Date of Recommendation - the date when the candidate was recommended
- Initial Job Opening - a job opening for which the candidate was recommended.
- Employee - if the candidate was hired, in this field you can see the name of employee that was created from candidate.