Cita APA (7th ed.)
Kragh, H., & Møller Pedersen, K. (2008). The moon that wasn't: The saga of Venus' spurious satellite. Birkhäuser.
Cita Chicago (17th ed.)
Kragh, Helge, i Kurt Møller Pedersen. The Moon That Wasn't: The Saga of Venus' Spurious Satellite. Basel: Birkhäuser, 2008.
Cita MLA (9th ed.)
Kragh, Helge, i Kurt Møller Pedersen. The Moon That Wasn't: The Saga of Venus' Spurious Satellite. Birkhäuser, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.