Jelaskan Operator dari Douglas C-47 Skytrain

Flintham, Victor. Air Wars and Aircraft: A Detailed Record of Air Combat, 1945 to the Present. New York: Facts on File, 1990. ISBN 0-8160-2356-5.

Francillon, René J. McDonnell Douglas Aircraft Since 1920. London: Putnam & Company Ltd., 1979. ISBN 0-370-00050-1.

Gradidge, Jennifer M. The Douglas DC-1, DC-2, DC-3: The First Seventy Years. Two volumes. Tonbridge, UK: Air-Britain (Historians) Ltd., 2006. ISBN 0-85130-332-3.

Pearcy, Arthur Jr. "Douglas R4D variants (US Navy's DC-3/C-47)". Aircraft in Profile, Volume 14. Windsor, Berkshire, UK: Profile Publications Ltd., 1974, pp. 49–73. ISBN 0-85383-023-1.

Yenne, Bill. McDonnell Douglas: A Tale of Two Giants. Greenwich, Connecticut: Bison Books, 1985. ISBN 0-517-44287-6.