Carl Jung, The Psychology of the Child Archetype

The Psychology of the Child Archetype: The Hermaphroditism of the Child, 3.295: "The idea of the coniunctio of male and female, which became almost a technical term..."

Found in Jung, C., Collected Works of C. G. Jung, Vol. 9, Part 1. 2nd ed., Princeton University Press. The essay was first published in 1940.