Sure, a reference's answers hold a lot of weight but who the reference is can be just as telling to a hiring manager. If the only references you can provide are your mom, your sister and your best friend, it might raise a red flag with the potential employer.

Most employers would prefer that a job seeker choose a former manager or supervisor as a reference. This is because managers are usually able to deliver a relatively unbiased opinion and are much less likely to be swayed into giving a positive referral if one isn't truly deserved. A manager is also a good pick for a reference because a positive referral from him will hold more weight than one from a co-worker who is similarly ranked. Job seekers should also select references who worked with them for at least a year, have a good understanding of their abilities and can attest to their positive attributes.