Mikkelsen, I. S. (1971). Knee of total electron content and scintillation boundary. Det Danske Meteorologiske Institut.
Cita Chicago Style (17a ed.)Mikkelsen, Ib Steen. Knee of Total Electron Content and Scintillation Boundary. Charlottenlund: Det Danske Meteorologiske Institut, 1971.
Cita MLA (9a ed.)Mikkelsen, Ib Steen. Knee of Total Electron Content and Scintillation Boundary. Det Danske Meteorologiske Institut, 1971.
Precaución: Estas citas no son 100% exactas.