Douglas, C. (1980). Swans of other worlds: Kazimir Malevich and the origins of abstraction in Russia / by Charlotte Douglas. UMI Research Press.
Chicago-viite (17. p.)Douglas, Charlotte. Swans of Other Worlds: Kazimir Malevich and the Origins of Abstraction in Russia / by Charlotte Douglas. Ann Arbor, Michigan: UMI Research Press, 1980.
MLA-viite (8. p.)Douglas, Charlotte. Swans of Other Worlds: Kazimir Malevich and the Origins of Abstraction in Russia / by Charlotte Douglas. UMI Research Press, 1980.
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