Παραπομπή σε μορφή APA (7η εκδ.)

Douglas, C. (1986). Beyond Reason: Malevich, Matiushin, Arnd Their Circles / von Charlotte Douglas. The spiritual in art : abstract painting 1890 - 1985.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Douglas, Charlotte. "Beyond Reason: Malevich, Matiushin, Arnd Their Circles / Von Charlotte Douglas." The Spiritual in Art : Abstract Painting 1890 - 1985 1986.

Παραπομπή σε μορφή MLA (8th εκδ.)

Douglas, Charlotte. "Beyond Reason: Malevich, Matiushin, Arnd Their Circles / Von Charlotte Douglas." The Spiritual in Art : Abstract Painting 1890 - 1985, 1986.