Papagiannis, M. D. (1972). Space physics and space astronomy. Gordon and Breach.
Lua i Stíl Chicago (17ú heag.)Papagiannis, Michael Demetrius. Space Physics and Space Astronomy. New York: Gordon and Breach, 1972.
Lua MLA (8ú heag.)Papagiannis, Michael Demetrius. Space Physics and Space Astronomy. Gordon and Breach, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.