Reference (English reference - reference, footnote) - an auxiliary image: a drawing or photograph that the artist studies before work in order to more accurately convey the details. * * *Any drawing is a self-portrait. Choose references carefully! Author's notes: This is the second part of the "Reference" mini-series, where each story is completed, but they are all one big plot. The book takes place in the Multiverse universe, but is in no way connected with the Watchmen series. Well, almost.