Marketing Articles in Review - Penn, William S. and Regan, William J. and Luck, David J. and Mazzola, Marie (Journal of Marketing, 1965)
https://katalog.adlr.link/Record/ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTE3Ny8wMDIyMjQyOTY1MDI5MDAyMTg