Here are 5 list of professional references to consider from.
Short Thread.
If a recruiter does his / her due diligence and reaches out to your references will they play this critical role properly?
These references can provide the best insight into your work ethic. Thereby giving full details of how you handle your responsibilities and duties.
A lecturer can provide really strong reference, especially if they taught a course that is related to the job being applied for.
They can lay emphasis on the skills you picked during that course, as well as your personal character.
Teamwork is a soft skill that an employer / recruiter looks out for and a colleague can be an excellent tier reference in that regard.
They will be able to speak about things you worked on together and what you achieved as a team.
Your mentor knows your professional goals and career visions, as they look out for your professional growth. Trust me, they'd be able to speak on your behalf in such a way to secure this new opportunity.
Volunteering is free work and can also mean you support an organization's cause. Providing them as your reference will only give them an opportunity to pay you back by speaking highly of you to your potential employer.
Also, if possible, give them as much information as possible about the job you're applying for.