@nonfedimemes
You don't cite it because it's original research, unless you wrote about it in something you published already, in which case you cite that.
Note that there is precedence here, because this has already been done multiple times.
Go the FBI way and find a citable, non-national security, source that has the same information.
@nonfedimemes Instead of fretting about APA you should just name the person you dreamed about as a coauthor of the paper. That's what mathematician Bob Thomason did:
"The first author must state that his coauthor and close friend, Tom Trobaugh, quite intelligent, singularly original, and inordinately generous, killed himself consequent to endogenous depression. Ninety-four days later, in my dream, Tom's simulacrum remarked, "The direct limit characterization of perfect complexes shows that they extend, just as one extends a coherent sheaf." Awaking with a start, I knew this idea had to be wrong, since some perfect complexes have a non-vanishing K₀ obstruction to extension. I had worked on this problem for 3 years, and saw this approach to be hopeless. But Tom's simulacrum had been so insistent, I knew he wouldn't let me sleep undisturbed until I had worked out the argument and could point to the gap. This work quickly led to the key results of this paper. To Tom, I could have explained why he must be listed as a coauthor. During his lifetime, Tom also pointed out the interesting comparison of the careers of Grothendieck and Newton."
@nonfedimemes
Makes me think of the, "In Xanadu did Kubla Khan a stately pleasure dome decree..." poem.
Hold on. I had to go look it up. Coleridge. All I ever remember of that poem is the note explaining that he attempted to transcribe it directly from a dream but was interrupted. I felt I could relate to that in my younger days. I held an idea that creativity was mysterious and dreamlike and had to be captured. I no longer hold that view. Dreams are great inspiration though.
Ramanujan dreamed about elliptic integrals. Y’know, as you do.
unpublished type and have it handle the rest for you