Duncan, D. D. (1960). The Kremlin. New York Graphic Society.
Lua i Stíl Chicago (17ú heag.)Duncan, David Douglas. The Kremlin. Greenwich, Conn: New York Graphic Society, 1960.
Lua MLA (9ú heag.)Duncan, David Douglas. The Kremlin. New York Graphic Society, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.