Rider, John F.; Muhleman, M. L., ур. (април 1932). „Color coding”(PDF). Service - A Monthly Digest of Radio and Allied Maintenance. New York City, NY, USA: John F. Rider Publications, Inc.1 (3): 62. Приступљено 2019-11-15. „Color coding of resistances used in receivers is not always according to the standard recommended by the RMA. Most of the manufacturers now are using this code. The following is a partial tabulation of receiver manufacturers and comments concerning their use of the body, tip and dot system. […]”CS1 одржавање: Формат датума (веза) (NB. Part 1/2 of a list of when each radio manufacturer first started using RMA color coded resistors.)