A good philosophy to follow in recruiting salespeople is:

Question $7$Answer

Use as few sources as possible to save time and money.

Contact your recruiting sources only when you need new sales representatives.

To get enough qualified applicants to maximize the chances of finding the right person for the job.

If you have a good job description and a good set of hiring qualifications, it doesn't much matter what recruiting sources you use.

Avoid recruiting inexperienced people.