What should be included on the Derived From line when extracting from multiple sources?

When extracting information from multiple sources, it is most appropriate to use "Multiple Sources" on the Derived From line. This designation provides a clear and concise method of indicating that the classification or content of the information has been informed by more than one source. It allows for proper acknowledgment of the variety of origin points from which the data has been derived without the need to list each source individually, which can be impractical or lead to an unwieldy level of detail.

Using "Individual source names" would not be suitable in this context, as it may compromise security by revealing too much specific information about each source. Including "Confidential details" is not appropriate as it does not provide relevant information about the sources. Lastly, the term "Classified Sources" may not accurately capture the breadth of extraction from multiple origins. Therefore, "Multiple Sources" effectively communicates the source aggregation while maintaining appropriate security protocols.