“43-5021.00 - Couriers and Messengers.” O*NET OnLine, National Center for O*NET Development, www.onetonline.org/link/summary/43-5021.00. Accessed 23 May 2022.
National Center for O*NET Development. 43-5021.00 - Couriers and Messengers. O*NET OnLine. Retrieved May 23, 2022, from https://www.onetonline.org/link/summary/43-5021.00
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