Describe four unknown-unknown sources of risk that can affect a supply chain and four known-unknown sources of risk that can affect a supply chain. For each source, apply a management strategy that may eliminate or lessen the effects on the overall supply chain.

Your paper must be four to five pages (not including title and reference pages) and must be formatted according to APA style as outlined in the approved APA style guide. You must cite at least three scholarly sources in addition to the textbook.