Certified Source is a full service staffing and recruiting firm committed to excellence. Certified Source is one of Oklahoma' ... s most trusted and valued staffing firms. It has been our pleasure to provide exceptional service to many of the area’s most desirable companies and fulfill their staffing needs above and beyond expectations. Certified Source has built an organization dedicated to delivering a staffing experience of the highest level. Our laser focus on quality and service excellence are the differentiators that have our clients relying on us as a leader in the industry. It is our focus on local markets that allows Certified Source to provide clients with staffing solutions custom tailored to their needs, while maintaining a pulse on the local economic market. This combination provides the strategic advantage companies look for in a partnership. read more