Tham khảo Cửa

    • Needham, Joseph. (1986). Science and Civilization in China: Volume 4, Part 2, Mechanical Engineering. Taipei: Caves Books, Ltd.
    • Home Safety Guidelines for Architects & Builders, NBS GCR 78-156, BOSTI, December 1978
    • Howard R. Turner (1997), Science in Medieval Islam: An Illustrated Introduction, p. 181, University of Texas Press, ISBN 0-292-78149-0.
    • Cửa cuốn như thế nào là an toàn