Creators and Contributors : LC-PCC Best Practices Guidelines
Myth: “Creators and contributors perform the same function, and the instructions regarding them are interchangeable and found in the same chapter of RDA” Reality: Absolutely not true! Creators are involved at the work level, and are covered in Chapter 19; contributors are involved at the expression level, and are covered in Chapter 20. Further, if you use a relationship designator, be sure to use one appropriate to the “WEMI” level. [Source : Library of Congress] RDA RELATIONSHIP DESIGNATORS