Benestad, Esben Esther Pirelli (7. april 2021). «ikke-binær». Store medisinske leksikon. Besøkt 20. mai 2021.
verywellmind.com
«What Does It Mean to Be Nonbinary or Enby?». Verywell Mind (på engelsk). Besøkt 20. mai 2021. «Nonbinary people are included in the broad category of transgender people. Although, some nonbinary people might not feel comfortable identifying as such because being transgender was historically narrowly defined as requiring a movement between binary genders. The notion that transgender people must transition to an "opposite" gender has been particularly strong (and particularly problematic) in the medical community.»
