Research in Astronomy and Astrophysics. IOPscience.
Chicago-čujuhus (17. p.)Research in Astronomy and Astrophysics. IOPscience.
MLA-čujuhus (9. p.)Research in Astronomy and Astrophysics. IOPscience.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.