• Planck mythology: WP:CIRCULAR, WP:CITOGENESIS, WP:CONTEXTMATTERS, What Planck Length Is and Its Common Misconceptions – Alex Klotz
• NIST SP 811 – §9.7: unit names singular except for a simple (non-compound) unit.

• WP:VP – Village pump

  WP:VPT – Village pump (technical)

• WP:LIB – The Wikipedia Library
• WP:RS/P – List of sources and their reliability