Tham khảo Khí cầu nhỏ lớp G

    • Shock, James R. (2001). U.S. Navy Airships 1915-1962. Edgewater, Florida: Atlantis Productions. ISBN 0-9639743-8-6.
    • Althoff, William F. (1990). Sky Ships. New York: Orion Books. ISBN 0-517-56904-3.
    • Allen, Hugh (1943). The Story of the Airship (non-rigid). Akron, Ohio.