Ley, W., Wittmann, K., & Hallmann, W. (2009). Handbook of space technology. Wiley.
Lua i Stíl Chicago (17ú heag.)Ley, Wilfried, Klaus Wittmann, agus Willi Hallmann. Handbook of Space Technology. Chichester, U.K.: Wiley, 2009.
Lua MLA (8ú heag.)Ley, Wilfried, et al. Handbook of Space Technology. Wiley, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.