Electronic color code (English Wikipedia)

Rider, John F.; Muhleman, M. L., eds. (April 1932). "Color coding" (PDF). Service - A Monthly Digest of Radio and Allied Maintenance. 1 (3). New York City, NY, USA: John F. Rider Publications, Inc.: 62. Retrieved 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. […] (NB. Part 1/2 of a list of when each radio manufacturer first started using RMA color coded resistors.)
Rider, John F.; Muhleman, M. L., eds. (May 1932). "Color coding - Continued from April issue" (PDF). Service - A Monthly Digest of Radio and Allied Maintenance. 1 (4). New York City, NY, USA: John F. Rider Publications, Inc.: 89. Retrieved 2019-11-15. (NB. Part 2/2 of a list of when each radio manufacturer first started using RMA color coded resistors.)

archive.org

Clement, Preston R.; Johnson, Walter Curtis (1960). Electrical Engineering Science. McGraw-Hill. p. 115.

"IEC 60062:2016-07" (6 ed.). July 2016. Archived from the original on 2018-07-23. Retrieved 2018-07-23. [1]
"IEC 60062:2016-07" (6 ed.). July 2016. Archived from the original on 2018-07-23. Retrieved 2018-07-23. [2]

"JEDEC History". JEDEC. Archived from the original on 2007-09-29. Retrieved 2007-09-29.

Westman, H. P., ed. (1968). Reference Data for Radio Engineers (5 ed.). ITT / Howard W. Sams. pp. 5-8–5-10. LCCN 43-14665.
Dorbuck, Tony, ed. (1978) [1977]. The Radio Amateur's Handbook (5 ed.). Connecticut, USA: The American Radio Relay League. pp. 553–554. LCCN 41-3345. no ISBN.

"NZO series zero-ohm resistors". NIC Components Corp. Archived from the original on 2009-01-04.

"How To Read Old Style Resistors" (PDF). 2006-10-03. Archived (PDF) from the original on 2016-12-19. Retrieved 2016-12-19.

"RMA Resistor and Flexible Resistor Color Codes". Archived from the original on 2016-12-19. Retrieved 2016-12-19.

"Resistor Color Calculator". www.resistorcolorcalculator.com. Retrieved 2023-03-15.

"IEC 60062:2016-07" (6 ed.). July 2016. Archived from the original on 2018-07-23. Retrieved 2018-07-23. [1]
"IEC 60062:2016-07" (6 ed.). July 2016. Archived from the original on 2018-07-23. Retrieved 2018-07-23. [2]

Buttner, Harold H.; Kohlhaas, H. T.; Mann, F. J., eds. (1946). "Chapter 3: Audio and radio design". Reference Data for Radio Engineers (PDF) (2 ed.). Federal Telephone and Radio Corporation (FTR). pp. 52, 57. Archived (PDF) from the original on 2018-05-16. Retrieved 2020-01-03.

"JEDEC History". JEDEC. Archived from the original on 2007-09-29. Retrieved 2007-09-29.
"IEC 60062:2016-07" (6 ed.). July 2016. Archived from the original on 2018-07-23. Retrieved 2018-07-23. [1]
"IEC 60062:2016-07" (6 ed.). July 2016. Archived from the original on 2018-07-23. Retrieved 2018-07-23. [2]
VR37 High ohmic/high voltage resistors (PDF). Vishay. 2015. Archived from the original (PDF) on 2016-09-10.
"NZO series zero-ohm resistors". NIC Components Corp. Archived from the original on 2009-01-04.
Buttner, Harold H.; Kohlhaas, H. T.; Mann, F. J., eds. (1946). "Chapter 3: Audio and radio design". Reference Data for Radio Engineers (PDF) (2 ed.). Federal Telephone and Radio Corporation (FTR). pp. 52, 57. Archived (PDF) from the original on 2018-05-16. Retrieved 2020-01-03.
"How To Read Old Style Resistors" (PDF). 2006-10-03. Archived (PDF) from the original on 2016-12-19. Retrieved 2016-12-19.
"RMA Resistor and Flexible Resistor Color Codes". Archived from the original on 2016-12-19. Retrieved 2016-12-19.
"The Antique Resistor Color Code" (PDF). Archived (PDF) from the original on 2016-12-19. Retrieved 2016-12-19.