APA-čujuhus (7. p.)
NASA. NASA, 25 Years: The Greatest Show in Space : Skylab: The First 40 Days ; Four Rooms, Earth View. Madacy.
Chicago-čujuhus (17. p.)
NASA. NASA, 25 Years: The Greatest Show in Space : Skylab: The First 40 Days ; Four Rooms, Earth View. EUA: Madacy.
MLA-čujuhus (9. p.)
NASA. NASA, 25 Years: The Greatest Show in Space : Skylab: The First 40 Days ; Four Rooms, Earth View. Madacy.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.