Tham khảo Khí cầu nhỏ lớp K

    • 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.
    • Althoff, William F. (2009). Forgotten weapon: U.S. Navy airships and the U-boat war. Annapolis, MD: Naval Institute Press. tr. 419. ISBN 978-1-59114-010-8.
    • Vaeth, J. Gordon (1992). Blimps & U-Boats. Annapolis, Maryland: US Naval Institute Press. ISBN 1-55750-876-3.