History Remembers Scientists of the 20th Century. Great Neck Publishing.
Chicago-čujuhus (17. p.)History Remembers Scientists of the 20th Century. Great Neck Publishing.
MLA-čujuhus (9. p.)History Remembers Scientists of the 20th Century. Great Neck Publishing.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.