Bonnet, Roger M., and Vittorio Manno.

International Cooperation in Space.

Cambridge, Mass.: Harvard University Press, 1994.

Boyne, Walter.

Messerschmitt 262: Arrow to the Future.

Washington. D.C.: Smithsonian Institution Press, 1980. ---.

Clash of Wings: Air Power in World War II.

New York: Simon & Schuster, 1994.

Brooks, Courtney G., James M. Grimwood, and Loyd S. Swenson.

Chariots for Apollo: A History of Manned Lunar Spacecraft.

Bog aan la aqoon